Question
Find the perimeter $ P $ of a rectangle if side $a = 156\, \text{cm}$ and side $b = 42\, \text{cm}$.
Answer
$396\, \text{cm}$
Explanation
To find perimeter $ P $ use formula:
$$ P = 2 a + 2 b $$After substituting $a = 156\, \text{cm}$ and $b = 42\, \text{cm}$ we have:
$$ P = 2 \cdot 156\, \text{cm} + 2 \cdot 42\, \text{cm} $$ $$ P = 312\, \text{cm} + 84\, \text{cm} $$ $$ P = 396\, \text{cm} $$This page was created using
Rectangle Calculator