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21 January, 22:45

5. A cylindrical tank has a radius of 15 ft. and a height of 45 ft. How many cubic feet of water can the tank

hold?

A. 127,170 cu. ft.

B. 31,792.5 cu. ft.

C. 15,896.25 cu. ft.

D. 675 cu. ft

8. The diameter of a round dinner plate is 10 inches. What is the area of the plate?

A. 39.25 square inches

B. 39.25 inches

C. 78.5 square inches

D. 314 square inches

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Answers (1)
  1. 21 January, 23:08
    0
    Volume of cylinder=h pi r^2

    r=15

    h=45

    aprox pi to 3.14 since the answers dont inlcud pi

    v=45 itmes 3.14 times 15^2

    v=45 times 3.14 times 225

    v=31,792.5 cu. ft

    answer is B

    area=pir^2

    diameter=2radius

    diameter/2=radius

    diameer=10

    10/2=raiuds=5

    area=pi times 5^2

    aprox pi to 3.14 since answers not given in pi

    area=3.14 times 25

    area=78.5 in^2

    answer i C

    5. B 31,792.5 cu. ft.

    8. C 78.5 square inches
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