# Ratio of perimeters

Rectangle ABCD has dimensions 3 cm and 4 cm, KLMN rectangle has dimensions 4 cm and 12 cm. Calculate the ratio of the perimeter ABCD and perimeter KLMN.

Correct result:

p =  0.4375

#### Solution:

$p=\frac{2\left(a+b\right)}{2\left(k+l\right)}=\frac{3+4}{4+12}=0.4375$

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