3 years ago

The length of a rectangle is 3 times the width if the area is 147 what is the perminer

1 answer:

7 0

Formula for are of a rectangle:
   A =L * W
1st isolate W
147 = 3W * W
147 = 3W^2
divide 147 by the by 3 on bot sides
  29 = W^2
get ride of the square by square rooting on both sides
   7 = W

2nd find the perimeter
P = 2(7) + 2(21)
  P = 14 + 42
P = 56

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