Question

The radius of a sphere is 3.5 cm. Find its surface area and volume.

Answer 1

Given the radius of the sphere is $3.5cm$

Then surface area of sphere $=4\pi r^2=4\times \frac{22}{7}\times (3.5{)}^2=154c{m}^2$

And volume of sphere $=\frac{4}{3}\pi r^3=\frac{4}{3}\times \frac{22}{7}\times (3.5{)}^3$ $=179.67c{m}^3$