Question

A wooden toy is in the form of a hemisphere is surmounted by a right

circular cone. The diameter of the base is 13cm and the height is 5cm.Find

the surface area of the toy.​

Answer 1

✷ Correct Question :-

Q) A wooden toy is in the form of a hemisphere is surmounted by a right circular cone. The diameter of the base is 13cm and the height is 5cm.Find the surface area of the toy.

$\large\bf{ \red{ \underline{ \underline{Answer}}}} \\ \\ \mathrm\purple{237.71 \: {cm}^{2} }$

$\mathrm{Given \: that \:hemisphere} \\ \\ \sf{In \: Hemisphere \: Height \: r \: = \: 5 \: cm} \\ \\ \sf{Base = \pi {r}^{2} = 13 \: cm} \\ \\ \sf{Surface \: Area \: of \: Hemisphere \: (Toy)} \\ \\ \sf{2\pi {r}^{2} + \pi {r}^{2} } \\ \\ \sf{ \implies 3\pi {r}^{2} } \\ \\ \sf{ \implies 3 \times \frac{22}{7} \times 5 \times 5 } \\ \\ \sf{ \implies \frac{66 \times 25}{7} } \\ \\ \sf{ \implies \frac{\cancel{1650}}{\cancel{7}} } \\ \\ \purple{ \implies} \purple{ \underline{ \boxed{237.71 \: cm}}}$