Question

The volume of cylinder is 200^3 cm. Its height is 10cm .find the area of its base​

Answer 1

$200 = \pi \: {r}^{2} h \\ 200 = \pi {r}^{2} 10 \\ \frac{200}{10} = \frac{22}{7} {r}^{2} \\ \frac{20 \times 7}{22} = {r}^{2} \\ \frac{140}{22} = {r}^{2} 6.36 = {r }^{2}$

Answer 2

200=pi x r^2 x h

200=(22/7)x r^2 x 10

1400=(22)x r^2 x 10

1400/10=22 x r^2

140=22 x r^2

140/22=r^2

6.36=r^2

r=√6.36