Question

A construction company is starting to build a new house. They need to put tape around the site to begin. The new home site is 20 meters wide by 40 meter long rectangle. The company already has 100 meters of tape. How much more tape does the company need to tape the site?

Answer 1

Answer: They need 20 more meters of tape.

This is because they are putting tape around the perimeter. To find the perimeter you add up each side.

This is shown like this

20+20+40+40=120meters.

But the question is asking how many more meters of tape does the company so we subtract the amount of tape they already which is 100meters from 120meters.

So it can be written like this

120m -100m = 20meters of tape

Answer: the company needs 20 more meters of tape.