Question

A box of cereal is shaped like a rectangular prism. The box is 20 centimeters long and 30 centimeters high. It's volume is 3600 cubic centimeters. Find the width of the box.

So basically I need the width using length height and volume.

Answer 1

1700 cm

Explanation

5 x 30 = 150

the total area of the sides is 2 x 150 = 300

the bottom and the top are both 5 by 20 rectangles

so 5 x 20 is 100

and 2 x 100 = 200

the back and the front are both 30 by 20

30 x 20 = 600

6000 x 2 =1200

300 + 200 + 1200 = 1700

Answer 2

With a rectangular prism with a length of 20 cm, height of 30 cm, and volume of 3600 cm, first set up the formula for the volume of a rectangular prism.

V=bwh

Then, plug in your known numbers

3600=20*30*w

Simplify

3600=600w

Use inverse operations to solve for w

3600/600=6

The width is 6 cm