Question

I have no idea what to do.. someone please explain??

Answer 1

Check the picture below.

bearing in mind that the large cylinder is using feet units, and thee are 12 inches to 1 foot, thus 10 feet = 120 inches.

Answer 2

d = 25 inches

Explanation:

If the figures are similar, the dimensions have to be in proportion

diameter diameter

------------- = ------------

height height

10 ft d inches

------------- = ------------

4 ft 10 inches

Using cross products

10 * 10 = 4 *d

100 = 4 d

Divide by 4

100/4 =4d/4

25 = d

d = 25 inches