Question

Hey friends answer this ASAP

Find the radius and total surface area of hemisphere whose volume is
$154 {cm}^{3}$
​

Answer 1

Answer:

volume of hemisphere = 154

$\frac{2}{3} \pi {r}^{3} = 154 \\ {r}^{3} = \frac{154 \times 7 \times 7}{22 \times 2} \\ {r}^{3} = 7 \times 7 \times 7$

r= 7

$sa = 2\pi {r}^{2} \\ sa = 2 \times \frac{22}{7} \times 7 \times 7 \\ sa = 308$

Answer 2

Answer:      2/3πr^3 = 154

                   ∴ r^3 = 154 x 7/22 x 3/2

                   ∴ r = 8.5 cm

        T.S.A. = 3πr^2 = 3 x 22/7 x 8.5 x 8.5

                   = 681.21 cm^2

PLEASE MARK BRAINLIEST