Question

a hemispherical tank has a radius 2.1 M then the capacity of the tank is​

Answer 1

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$\tt \: r = 2.1 \: m \\ \\ \tt \: capacity(volume) \: of \: hemispherical \: tank \: = \\ \\ \tt \: v = \frac{2}{3} \pi {r}^{3} \\ \\ \tt v = \frac{2}{3} \times \frac{22}{7} \: \times 2.1 \:\times 2.1 \times 2.1 \\ \\ \tt \: v = 19.404\: m {}^{3}$