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 answer:

p =  0.4375

Step-by-step explanation:

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

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