Rectangle floor perimeter 30. The length is 7ft longer than the width.

Question

Rectangle floor perimeter 30. The length is 7ft longer than the width.

A. What are the dimension of the rectangle.

B. How much will it cost to tile the floor if the price is $1.19 per square foot. Find the exact answer 77 7/9 of $1,800.

Answer 1

P = 2(l + w)

P/2 = l + w

l = w + 7

15 = w + 7 + w

8 = 2w

w = 4

l = 4 + 7

l = 11

1.19(4)(11) = your answer