Question

What the area of the sphere if it's volume is 3x +1 cm³​

Answer 1

`{ \tt{volume = (4)/(3) \pi {r}^(3) }} \\ \\ { \tt{v = (4)/(3) \pi {r}^(3) }} \\ \\ { \tt{area = (dv)/(dr) = 4\pi {r}^(2) }} \\ \\ { \tt{area = (d(3x + 1))/(dx) }} \\ \\ { \tt{area = 3 \: {cm}^(2) }}`