Question
Find the area $ A $ of a rhombus if side $a = 11\, \text{cm}$ and incircle radius $r = 6\, \text{cm}$.
Answer
$132\, \text{cm}^2$
Explanation
STEP 1: find height $ h $
To find height $ h $ use formula:
$$ h = 2 \cdot r $$After substituting $r = 6\, \text{cm}$ we have:
$$ h = 2 \cdot 6\, \text{cm} $$ $$ h = 12\, \text{cm} $$STEP 2: find area $ A $
To find area $ A $ use formula:
$$ A = a \cdot h $$After substituting $a = 11\, \text{cm}$ and $h = 12\, \text{cm}$ we have:
$$ A = 11\, \text{cm} \cdot 12\, \text{cm} $$$$ A = 11\, \text{cm} \cdot 12\, \text{cm} $$$$ A = 132\, \text{cm}^2 $$This page was created using
Rhombus Calculator