Help with homework

Question

The perimeter of the tennis court is 228 feet. If the width is 36 feet, what is the length?

Answer 1

2*36+2*w=228

72+2w=228

2w=156

w=78

Answer 2

Since we know that a tennis court is rectangular, we know 2 of the 4 sides are 36 ft long. And since it's a rectangle, the other 2 sides are of equal length. The equation for the perimeter of a rectangle is:

2(L)+2(W)=P L=Length, W=Width, P=Perimeter

Therefore with the given information:

2(L)+2(36)=228 Solve for L.

Answer 3

P = 2l + 2w

P = 2(l + w)

P/2 = l + w

228/2 = l + 36

114 = l + 36

l = 78 ft