Perimeters

A rectangle has a perimeter of 16p centimeters, it had a width of 2p centimeters. Each side of an equilateral triangle is 1/2 the length of the rectangle. Find the total perimeter of the rectangle and the triangle if p=8.

Correct result:

r =  128 cm
t =  72 cm

Solution:

p=8 r=16 p=16 8=128 cm
w=2 p=2 8=16 cm l=r/2w=128/216=48 cm s=12 l=12 48=24 cm  t=3 s=3 24=72 cm



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