find the area of this triangle. area of a triangle $a = \\frac{1}{2}bh$…

$find the area of this triangle. area of a triangle $a = \\frac{1}{2}bh$…$

find the area of this triangle. area of a triangle $a = \frac{1}{2}bh$ $a = ?cm^{2}$

Given $b = 5$ cm and $h=4$ cm, substitute into $A=\frac{1}{2}bh$.
$A=\frac{1}{2}\times5\times4$

First, calculate $5\times4 = 20$. Then, $\frac{1}{2}\times20$.
$A = 10$

$10$