rectangle problem 6:
problem
The perimeter of a rectangle is 128 inches, the width is 39 inches
calculate a) length? b) area?
answer length
P = (l + w) * 2
128 = (l + 39) * 2 / : 2
64 = l + 39 / – 39
length = 25 inches
A: The length of the rectangle is 25 inches.
answer area
A = l * w
A = 25 in * 39 in
A = 975 in²
A: The area of the rectangle is 975 in².