The formula for the volume and surface area ... text{The surface area of a sphere} ~=~ \text{4} \times \pi \times \text{r}^{2}\) The diameter is the distance from one point on the surface to ...

The diameter is the length across the widest ... The volume of a sphere can be found using the formula Volume of a Sphere = 4/3 πr 3 Calculate the volume of a grain of sand.

Remember that the circumference of a circle \(= \pi \times d\) and the diameter ... pi r^2\) is given on the formula sheet A hemisphere is half of a sphere. The volume can be found by calculating ...