Surface Area and Volume
Example 1
A big cantaloupe has a diameter of about 26 inches. How much surface area does its peel cover?

Example 2
You ate half the cantaloupe and now you're full. How much saran wrap will you need to cover the rest of the cantaloupe and save it for later? 
Example 3
Find the surface area of the solid.

Example 4
As part of your pottery class, you decide to make a bowl in the shape of a hemisphere. It's a perfect hemisphere, so clearly you rock at pottery. If you want to paint the entire thing blue, how much surface area will you cover? 