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8 October, 19:28

What volume of water will fit inside a cylindrical barrel that has a total surface area of 1885 in2 and a radius of 10 inches?

6283 in3

20 in3

1885 in3

18850 in3

+5
Answers (1)
  1. 8 October, 19:33
    0
    Volume of a cylinder,

    V=Area base*h

    Total surface area=top area+bottom area+lateral area=2*pi*r^2+pi*r*h. So

    1885=2*pi*10^2+2*pi*h*r

    Solving for h, h=20. So the volume is,

    V=pi*10^2*200=6283 in^3
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