Question

solid hemisphere
The total surface area of a
is 55902 cm. Find its radius. ​

Answer 1

$\huge \underline{ \underline{ \bf \purple{Solution :}}}$

$\large\longrightarrow \:\boxed{ \sf T.S.A \: of \: Hemisphere = 3 {\pi r}^{2}} \\ \\ \longrightarrow \: \sf3 \times \frac{22}{7} \times {r}^{2} = 55902 \\ \\\longrightarrow \: \sf {r}^{2} = \frac{55902 \times 7}{22} \\ \\ \longrightarrow \: \sf {r}^{2} = \frac{391314}{66} \\ \\ \longrightarrow \: \sf {r}^{2} = 5929 \\ \\\longrightarrow \: \sf r = \sqrt{5929} \\ \\\longrightarrow \: \sf r = 77$

$\large \underline{ \red{ \bf\therefore Radius \: of \: hemisphere \: is \: 77 \: cm}}$

Answer 2

Answer:

r=77

is it ans. dude..........