Question

2.) As solid cylinder has total surface area of
462 square cm. Its curved surface area is one-third
of its total surface area. Find the volume of the
cylinder.​

Answer 1

Answer:

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Answer 2

Answer:

tsa = 462

2 * pie * rh + 2 * pie * r² = 462

2 * pie (rh + r²) = 462

rh + r² = 462 * 7 / 22 * 2 = 73.5

csa = 2 * pie * r * h

154 = 2 * 22/7 * r * h

154 * 7 / 2 * 22 = rh

1078 / 44 = rh

24.5 = rh

now rh + r² = 73.5 but rh = 24.5

so r² = 73.5 - 24.5 = 49 so r = 7

volume = pie * r² * h

= 22/7 * r * rh

= 22/7 * r * 24.5 = 77 r ie 77 * 7 = 539.