Question

A carpenter is building a rectangular fence for a playground. One side of the playground is the wall of a building 70 ft wide. He plans to use 340 ft of fencing material. What is the length of the playground if the width is 70 ft?

I don't know how I would write this equation. Any help is appreciated!

Answer 1

By knowing that this is a rectangular area we already know 2 sides from 1 measurement.

70ft + 70ft = 140ft of both sides

By taking the total of 340ft you get:

340ft - 140ft = 200ft

Now that there is 200ft left and only 2 sides that are equal to each other we can just divide by 2.

200ft / 2 = 100ft

Now we have the length as 100ft and the width as 140ft.

This will result in a playground fence of 100ft by 70ft.