Find the diagonal $ d_2 $ of a rhombus if area $A = 18$ and diagonal $d_1 = 9$.
Answer
$d_2 = 4$
Explanation
To find diagonal $ d2 $ use formula:
$$ A = \dfrac{ d_1 \cdot d_2 }{ 2 } $$After substituting $ A = 18 $ and $ d_1 = 9 $ we have:
$$ 18 = \dfrac{ 9 \cdot d_2 }{ 2 } $$$$ 18 \cdot 2 = 9 \cdot d_2 $$$$ 36 = 9 \cdot d_2 $$$$ d_2 = \dfrac{ 36 }{ 9 } $$$$ d_2 = 4 $$This page was created using
Rhombus Calculator