Question

Find the area of triangle whose side is 6cm ,10cm,6cm​

Answer 1

Answer:

$s \: = \frac{6 + 10 + 6}{2}$

$= \frac{22}{2} = 11 \:$

$area = \sqrt{s(s - a)(s - b)(s - c)}$

$= \sqrt{11(11 - 6)(11 - 10)(11 - 6)}$

$= \sqrt{11(5)(1)(5)}$

$= \sqrt{11(25)}$

$= \sqrt{275}$

$= 16.58 {cm}^{2}$