填空题One side of square A is 1/2 the length of the diagonal of square B. If the area of square A is 16, what is the area of square B?a + b- 4z = 500a +b + 6z= 1200____

题目

填空题

One side of square A is 1/2 the length of the diagonal of square B. If the area of square A is 16, what is the area of square B?a + b- 4z = 500a +b + 6z= 1200____

相似考题

1.If the square root of t is a real number, is the square root of t positive?(1) t＞0(2) t2＞0

2.试题五（共 15 分）阅读下列说明、图和C++代码，回答问题1 至问题3，将解答写在答题纸的对应栏内。[说明]已知四个类之间的关系如图 5-1 所示，分别对每个类的方法进行编号，例如 Shape的 perimeter()方法为 1 号，表示为“1:perimeter()” ，Rectangle 类的 perimeter()为2号，表示为“2:perimeter()” ，依此类推，其中，每个类的 perimeter方法都为虚函数且方法签名相同。[C++代码]Triangle *tr = new Triangle();Square *sq = new Square();Shape *sh = tr;[问题 1] 关于上述 C++代码中 sh 和 tr 的以下叙述中，哪两个是正确的（写出编号）。① sh 和 tr 分别引用同一个对象；② sh 和 tr 分别引用同一类型的不同的对象；③ sh 和 tr 分别引用不同类型的不同对象；④ sh 和 tr 分别引用同一个对象的不同拷贝；⑤ sh 和 tr 所引用的内存空间是相同的。[问题 2] 写出下面消息对应的方法编号（如果该消息错误或者没有对应的方法调用，请填写“无” ）。tr->height() （1）sh->perimeter() （2）sq->height() （3）sq->perimeter() （4）sh->height() （5）tr->perimeter() （6）[问题 3] 不考虑内存释放问题，下列赋值语句中哪两个是合法的（写出合法赋值语句的编号）。① sq = sh; ② sh = tr; ③ tr = sq; ④ sq = tr; ⑤ sh = sq;

3.Entering from sea，a daymark on the port side of the channel would be indicated on a chart by a ______.A.red triangle with the letter RB.white triangle with the letters RGC.green square with the letter GD.white square with the letters GR

4.试题七（共 15 分）阅读下列说明、图和Java 代码，回答问题1 至问题3，将解答写在答题纸的对应栏内。[说明]已知四个类之间的关系如图 7-1 所示，分别对每个类的方法进行编号，例如 Shape的 perimeter()为 1 号，表示为“1:perimeter()” ，Rectangle 类的 perimeter()为 2 号，表示为“2:perimeter()” ，依此类推，其中，每个类的 perimeter方法签名相同。[Java 代码]Triangle tr = new Triangle();Square sq = new Square();Shape sh = tr;[问题 1] 关于上述 Java代码中 sh 和 tr 的以下叙述中，哪两个是正确的（写出编号）。① sh 和 tr 分别引用同一个对象；② sh 和 tr 分别引用同一类型的不同的对象；③ sh 和 tr 分别引用不同类型的不同对象；④ sh 和 tr 分别引用同一个对象的不同拷贝；⑤ sh 和 tr 所引用的内存空间是相同的。[问题 2] 写出下面消息对应的方法编号（如果该消息错误或者没有对应的方法调用，请填写“无” ）。tr.height() （1）sh.perimeter() （2）sq.height() （3）sq.perimeter() （4）sh.height() （5）tr.perimeter() （6）[问题 3] 下列赋值语句中哪两个是合法的（写出合法赋值语句的编号）。① sq = sh; ② sh = tr; ③ tr = sq; ④ sq = tr; ⑤ sh = sq;

参考答案和解析

正确答案： 32

解析：
如果正方形A为16，那么它的边长为4，因为B的对角线是A的边长的两倍，所以B的对角线为8，设B的边长为b，根据勾股定理，b²+ b²= 8²=64，所以32 = b²，所以B的面积为32。

更多“One side of square A is 1/2 the length of the diagonal of sq”相关问题

第1题：

A tow astern is veering from side to side on its towline．The best way of controlling the action is to ______．
A.Trim the tow by the bow
B.Trim the tow by the stern
C.List the tow to windward
D.Adjust the length of the towing bridle

正确答案：B
第2题：

Definition of Length：（）
- A、The length shall be taken as 96% of the total length
- B、The length shall be taken as 96% of the Lbp
- C、The length shall be taken as 96% of the total length on a waterline at 85% of the least moulded depth measured from the top of the keel
- D、The length from the fore side of the stem to the axis of the rudder stock on that waterline
正确答案:C,D
第3题：

单选题
The length of a rectangular kitchen floor is 3 feet more than its width, if the length of the floor is 12 feet, what is the area of the floor in square feet?
A
9
B
15
C
42
D
108
E
44

正确答案： A
解析：
已知矩形的长为12英尺，而长比宽多3英尺，所以矩形的宽为9英尺，那么矩形的面积=长×宽=12×9=108平方英尺。
第4题：

单选题
The length of a rectangle is 5 more than the side of a square, and the width of the rectangle is 5 less than the side of the square. If the area of the square is 45, what is the area of the rectangle?
A
20
B
25
C
45
D
50
E
70

正确答案： D
解析：
设正方形的边长为x，那么根据题意有x²=45，所以矩形的面积为 (x+5)(x-5) =x²-25=45-25=20。
第5题：

问答题
A rectangle is equal in area to a square with sides of length 12. Is the diagonal of the rectangle greater in length than 20?　　(1) The rectangle has a length of 16.　　(2) The rectangle has a width of 9.

正确答案： D
解析：
通过计算可知，若长方形长为16或宽为9，面积为144，其对角线长度均小于20，故本题选D项。
第6题：

多选题
Definition of Length：（）
A
The length shall be taken as 96% of the total length
B
The length shall be taken as 96% of the Lbp
C
The length shall be taken as 96% of the total length on a waterline at 85% of the least moulded depth measured from the top of the keel
D
The length from the fore side of the stem to the axis of the rudder stock on that waterline

正确答案： B,C
解析：暂无解析
第7题：

单选题
When backing down with sternway，the pivot point of a vessel is（）.
A
about one-quarter of the vessel's length from the stern
B
at the bow
C
about one-third of the vessel's length from the bow
D
aft of the propellers

正确答案： A
解析：暂无解析
第8题：

单选题
On entering from seaward，a starboard side daymark will（）.
A
show a fixed red light if lighted
B
show a Morse (A) white light
C
be square in shape
D
have an even number if numbered

正确答案： A
解析：暂无解析
第9题：

单选题
The unit of duration of a dash in Morse Code is（）.
A
one and one-half times the length of a dot
B
twice the length of a dot
C
three times the length of a dot
D
four times the length of a dot

正确答案： B
解析：暂无解析
第10题：

单选题
（）measured at the midship section and taken from outside of the ship’s side shell plating on one side to the outside of ship’side shell plating on the other side.
A
Length overall
B
After perpendicular
C
Amidships
D
Extreme breadth

正确答案： A
解析：暂无解析
第11题：

填空题
One side of square A is 1/2 the length of the diagonal of square B. If the area of square A is 16, what is the area of square B?a + b- 4z = 500a +b + 6z= 1200____

正确答案： 32
解析：
如果正方形A为16，那么它的边长为4，因为B的对角线是A的边长的两倍，所以B的对角线为8，设B的边长为b，根据勾股定理，b²+ b²= 8²=64，所以32 = b²，所以B的面积为32。
第12题：

填空题
函数ListDelete_sq实现顺序表删除算法，请在空格处将算法补充完整。int ListDelete_sq(Sqlist *L,int i){ int k; if(iL->length) return ERROR;for(k=i-1;klength-1;k++) L->slist[k]= （1） ; （2） ; return OK;}

正确答案：（1）L->slist[k+1] （2） --L->Length
解析：暂无解析
第13题：

函数ListDelete_sq实现顺序表删除算法，请在空格处将算法补充完整。int ListDelete_sq(Sqlist *L,int i){ int k; if(i<1||i>L->length) return ERROR;for(k=i-1;klength-1;k++) L->slist[k]= （1） ; （2） ; return OK;}

正确答案:（1）L->slist[k+1] （2） --L->Length
第14题：

X1632型万能铣床工作台左右运动由操纵手柄来控制，其联动机构控制行程开关是（），他们分别控制工作台向右及向左运动。
- A、SQ1和SQ2
- B、SQ2
- C、SQ3和SQ2
- D、SQ4和SQ2
正确答案:A
第15题：

单选题
If one pair of opposite sides of a square are increased in length by 20% and the other pair of sides are increased in length by 50%, by what percent is the area of the rectangle that results greater than the area of the original square?
A
10%
B
50%
C
70%
D
75%
E
80%

正确答案： E
解析：
Suppose the length of a side of the original square is 10; then the area of that square is 10×10 or 100. Since one pair of opposite sides of the square are increased in length by 20%, and 20% of 10 is 2, the length of that pair of opposite sides of the new rectangle is 10+2 or 12. Since the other pair of sides are increased in length by 50%, and 50% of 10 is 5, the length of the other pair of opposite sides of the new rectangle is 10+5 or 15. The area of the new rectangle formed is 12×15 or 180, which is 80% greater than 100, the area of the original square.
第16题：

单选题
If A (-1, 1) and B (3, -1) are the endpoints of one side of square ABCD, what is the area of the square?
A
12
B
16
C
20
D
25
E
36

正确答案： B
解析：
根据距离公式可得：AB²=（-1-3）²+（1-（-1））²=20，而AB又是正方形ABCD的边长，所以正方形的面积为AB²=20.
第17题：

单选题
Entering from sea,a daymark on the port side of the channel would be indicated on a chart by a（）.
A
red triangle with the letter R
B
white triangle with the letters RG
C
green square with the letter G
D
white square with the letter GR

正确答案： B
解析：暂无解析
第18题：

单选题
If the area of a square with sides of length 8 centimeters is equal to the area of a rectangle with a width of 4 centimeters, what is the length of the rectangle, in centimeters?
A
4
B
8
C
12
D
16
E
18

正确答案： D
解析：
设长方形长为x，故4x=8×8，x=16，故本题选D项。
第19题：

单选题
A list signal of one white light indicates that the vessel is （）.
A
on an even keel
B
listing about 1° to the side the light is displayed on
C
listing over 5° With the light displayed on the high side
D
listing，and the chutes should be directed to the side where the light is displayed

正确答案： B
解析：暂无解析
第20题：

单选题
A tow astern is veering from side to side on its towline. The best way of controlling the action is to（）.
A
trim the tow by the bow
B
trim the tow by the stern
C
list the tow to windward
D
adjust the length of the towing bridle

正确答案： A
解析：暂无解析
第21题：

单选题
Which of the following describes one of the apartments the speaker has seen?
A
A railway on one side and a lake on the other.
B
A busy road on one side and a lake on the other.
C
A busy road on one side and a railway on the other.

正确答案： C
解析：
独白明确提到One apartment I saw had been empty for two years. It has a busy road on one side and a railway on the other!
第22题：

问答题
If the square root of t is a real number, is the square root of t positive?　 (1) t > 0　 (2) t2> 0

正确答案： E
解析：
因为一个正数有两个互为相反数的平方根，所以知道该证书的值无法确定其平方根的值，故本题应选E项。
第23题：

单选题
When using carbon dioxide to fight a fire on a bulkhead，the CO2 should be applied（）.
A
first to the bottom of the flaming area，sweeping from side to side，and following the flames upward
B
in a circular motion from the middle of the bulkhead outward
C
to the top of the flaming area，sweeping from side to side，and working toward the bottom
D
in an up-and-down motion from one side of the bulkhead to the other

正确答案： D
解析：暂无解析
第24题：

单选题
If an inflatable liferaft is overturned，it may be righted by（）.
A
filling the stabilizers on one side with water
B
releasing the CO₂ cylinder
C
pushing up from under one end
D
standing on the inflating cylinder and pulling on the straps on the underside of the raft

正确答案： A
解析：暂无解析

填空题One side of square A is 1/2 the length of the diagonal of square B. If the area of square A is 16, what is the area of square B?a + b- 4z = 500a +b + 6z= 1200____

题目

相似考题

参考答案和解析

更多“One side of square A is 1/2 the length of the diagonal of sq”相关问题

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