Question

The volume of cylinder of base radius 35cm is 2310 cm cubic then the csa of cylinder is
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Answer 1

Answer:

$volume \: = 2310 {cm}^{3} \\ radius = 35cm \\ volume \: \: of \: \: cylinder \: = \pi {r}^{2} h \\ 2310= \frac{22}{7} \times 35 \times 35 \times h \\ 2310 = 22 \times 5 \times 35 \times h \\ \frac{2310}{22 \times 5 \times 35} = h \\ \frac{66}{22 \times 5} = h \\ \frac{3}{5} = h \\ h = 0.6cm \\ csa \: \: of \: \: cylinder \: = 2\pi \: rh \\ = 2 \times \frac{22}{7} \times 35 \times 0.6 \\ = 2 \times 22 \times 5 \times 0.6 \\ = 44 \times 5 \times 0.6 \\ = 220 \times 0.6 \\ = 132 {cm}^{2}$

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