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  1. A circle has a center at (3,5). The point (3,8) is on the circle. What is the circumference of the to the nearest tenth of a unit?

A9.4 units
B18.8 units
C28.3 units
D56.5 units

  1. A triangle has a perimeter of exactly 24 units. Which of the following could be the vertices of the triangle?

A(-1 ,3 ), (2,-1), (-1,-1)
B(6,0), (6,7), (0,7)
C(-1,-1), (-6,-13), (-9,-9)

D.(-3,-4) (-3,4), (3,4)

  1. A circle has an area of approximately 78.5 square units. If the center of the circle is at (2,4). Which of the following points is on the circle?

A(-6,4)
B(2,-1)

C.(-4,-4)

D(2,-9)

  1. The end point of a diameter of a circle are A (2,1) and B (5,5). Find the area of the circle in terms of pi.

A25/4 pi square units
B10 pi square units

C 25 pi square units

D5 pi units

Verified Answer :

scme1702
  1. B
    Radius of circle = 3 units
    C = 2πr
    C = 18.8 units

    2. D
    The distances between the points add to 24.

    3. B
    A = πr²
    r = √(78.5/π)
    r = 5 units
    Point from options that is 5 units from (2,4) is (2,-1)

    4. A
    length of diameter = √[(5 - 1)² + (5 - 2)]
    d = 5
    r = 5/2

    A = πr²
    A = 25/4 pi units²
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Answer:

1. B

2. D

3. B

4. A

Step-by-step explanation:

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