Question

What is the length of the side of a square field whose perimeter is 72 mº.

Answer 1

18 meters

Explanation:

"Perimeter" is all 4 sides added together, right?

Since it's a square, all four sides are equal, so the problem looks like this:

s + s + s + s = 72 where s = side length

Before doing any math, can you think of a number that you could add to itself 4 times and get 72? If not, you get to do some algebra:

s + s + s + s = 72 reduces to:

4s = 72 Then solve for s:

s = 72/4 = 18 m

Check your work by seeing if 4 x 18 = 72. It does, so the answer is correct.