# What is the perimeter of a triangle with sides 14mm and 17mm and the right angle is opposite the third side?

Aug 6, 2016

$= 53 m m$

#### Explanation:

So we have a right-angled triangle having $p = 14$;$b = 17$ and we have to find h=?
$h = \sqrt{{p}^{2} + {b}^{2}}$
or
$h = \sqrt{{14}^{2} + {17}^{2}}$
$= \sqrt{196 + 289}$
$= \sqrt{485}$
$= 22$
So the perimeter $= 14 + 17 + 22$
$= 53 m m$