Test 1 #35 (calculator section)

You can find the formula for the volume of a right circular cylinder at the beginning of the section; it’s . Since the question tells you the volume (72π cubic yards) and the height (8 yards), you can solve for the radius:

Now, be careful! The question asks for the *diameter*, not the radius. Even though *they underline the word diameter*, I bet a lot of people still miss this question by putting the radius.

If the radius is 3, then the diameter is 6.