Question

find the volume and the T.S.A
of himisphere of radius 3.5am​

Answer 1

Step-by-step explanation:

Given,

Radius of sphere = 3.5 = 7/2

$$\begin{lgathered}volume \: of \: sphere \: = \frac{2}{3} \pi \: {r}^{3} \\ \\ = \frac{2}{3} \times \frac{22}{7} \times \frac{7}{2} \times \frac{7}{2} \times \frac{7}{2} \\ \\ = \frac{539}{6} \\ \\ = 89.83 {cm}^{3} \\ \\ surface \: area \: = 3\pi \: {r}^{2} \\ \\ = 3 \times \frac{22}{7} \times \frac{7}{2} \times \frac{7}{2} \\ \\ = \frac{231}{2} \\ \\ = 115.5 {cm}^{2}\end{lgathered}$$

Answer 2

Step-by-step explanation:

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