The length of a rectangle is four times its width. If the area of the rectangle is 100 ft?, find its perimeter
1 answer:
Answer:
P = 50 ft
Step-by-step explanation:
A = L*W
If
L = 4W
then
100 = 4W*W
100 = 4W^2
W^2 = 100/4
W^2 = 25
W = 5 ft
Then
L= 4(5)
L= 20 ft
P = 2L + 2W
Then
P = 2(20) + 2(5)
P = 40 + 10
P = 50 ft
Best regards
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