Question
Find the area $ A $ of a trapezoid if long base $a = 12\, \text{cm}$, short base $b = 3.6\, \text{cm}$ and height $h = 6\, \text{cm}$.
Answer
$46.8\, \text{cm}^2$
Explanation
To find area $ A $ use formula:
$$ A = \frac{ (a + b) \cdot h}{ 2 }$$After substituting $ a = 12 $ , $ b = 3.6 $ and $ h = 6 $ we have:
$$ A = \frac{ (12\, \text{cm} + 3.6\, \text{cm}) \cdot 6\, \text{cm}}{ 2 }$$$$ A = \frac{ 15.6\, \text{cm} \cdot 6\, \text{cm}}{ 2 }$$$$ A = \frac{ 93.6\, \text{cm}^2 }{ 2 }$$ $$ A = 46.8\, \text{cm}^2 $$This page was created using
Trapezoid Calculator