更多“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 12B 16C 20D 25E 36”相关问题
  • 第1题:

    CA6140型车床前端轴的承型号是D3182121,其内孔是C=()锥度孔。

    • A、1:12
    • B、1:16
    • C、1:20
    • D、7:24

    正确答案:A

  • 第2题:

    小支气管阻力占气道总阻力()

    • A、1/10
    • B、1/15
    • C、1/20
    • D、1/25
    • E、1/30

    正确答案:A

  • 第3题:

    LFP-901A的CPU1强调快速性,采样率为每周波()。

    • A、12 
    • B、16 
    • C、20 
    • D、24

    正确答案:C

  • 第4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: B
    解析: 暂无解析

  • 第5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6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7题:

    单选题
    A

    12

    B

    16

    C

    20

    D

    25


    正确答案: B
    解析: 暂无解析

  • 第8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9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: C
    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10题:

    奶牛舍的采光系数为().

    • A、1:12
    • B、1:16
    • C、1:15
    • D、1:10

    正确答案:A

  • 第11题:

    LFP-901A的CPU1作为主保护强调快速性,采样率为每周()。

    • A、12
    • B、16
    • C、20
    • D、4

    正确答案:C

  • 第12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: A
    解析:
    设长方形长为x,故4x=8×8,x=16,故本题选D项。

  • 第13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14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15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: C
    解析: 暂无解析

  • 第16题:

    单选题
    The TPC curve,one of the hydrostatic curves in a vessel’s plans,gives the number of tons().
    A

    necessary to change the angle of list 1°at a given draft

    B

    necessary to change trim 1 cm at a given draft

    C

    pressure per square cm on the vessel's hull at a given draft

    D

    necessary to further immerse the vessel 1 cm at a given draft


    正确答案: A
    解析: 暂无解析

  • 第17题:

    单选题
    If the area of a square is 100 cm2, then its perimeter is ______.
    A

    10cm

    B

    20cm

    C

    40cm

    D

    200cm

    E

    100cm


    正确答案: C
    解析:
    The area of a square is given by the formula A = s2 where s = the length of its side. 100=S2, S=10. The square’s perimeter is 4×10= 40 cm.

  • 第18题:

    单选题
    What is the volume of a sphere whose surface area is 100π square units?
    A

    (100/3)π cubic units or units3

    B

    (500/3)π units3

    C

    160π units3

    D

    (375/4)π units3

    E

    520 units3


    正确答案: A
    解析:
    The formula for the surface area of a sphere is SA = 4πr2. 100π= 4πr2, 25 = r2, 5=r. The volume is, therefore, (4/3) πr3 = 4/3π(5)3=(4/3)π(125) =(500/3)π