# How do you find the area of a triangle with base 10 cm and altitude 9 cm?

Jul 31, 2015

 = color(blue)(45cm^2

#### Explanation:

The area of a triangle when the base $\left(b\right)$ and altitude/height $\left(h\right)$ are given is

 = color(blue)(1/2 xx b xx h

Here, $b a s e = 10 c m$
$h e i g h t = 9 c m$

Area = $\frac{1}{2} \times 10 \times 9$

$= 5 \times 9$

 = color(blue)(45cm^2