Question

Please help me it's urgent pracho. ​

Answer 1

Given:-

Area of the triangles= 52, 56, 60cm.

To Find:-

15×4=60

Solution:-

Sides of triangle are a=52 cm, b=56 cm, c= 60 cm.

$\small\sf\underline\blue{Semi \: Perimeter} = \frac{a + b + c}{2}$

$= \frac{52 + 56 + 60}{2} = \small\sf\underline\red{84 \: cm}$

$\small\sf\underline\green{by \: herons \: formula =} \sqrt{s {} (s - a)} \sqrt{(s - b)} \sqrt{(s - c)}$

$= \sqrt{84(84 - 52) \: (84 - 56)(84 - 60)}$

$= \sqrt{84 \times 32 \times 28 \times 24}$

$= 2 \times 3 \times 7 \times 2 \times 2 \times 2 \times 2 \times 2$

= 1344 cm²