Find the diagonal $ d_2 $ of a rhombus if area $A = 140$ and diagonal $d_1 = 20$.
Answer
$d_2 = 14$
Explanation
To find diagonal $ d2 $ use formula:
$$ A = \dfrac{ d_1 \cdot d_2 }{ 2 } $$After substituting $ A = 140 $ and $ d_1 = 20 $ we have:
$$ 140 = \dfrac{ 20 \cdot d_2 }{ 2 } $$$$ 140 \cdot 2 = 20 \cdot d_2 $$$$ 280 = 20 \cdot d_2 $$$$ d_2 = \dfrac{ 280 }{ 20 } $$$$ d_2 = 14 $$This page was created using
Rhombus Calculator