Question

ek tribhuj ki bhujao me anupaat 6 :7 : 8 hai iska parimaap 84 cm hai . tribhuj ka kshtrafal gyat kijiye .

Answer 1

6x+7x+8x= 84
21x= 84
x= 84/21= 4
Therefore, x is 4
The sides are 6*4= 24cm
7*4= 28cm, and 8*4= 32cm

Answer 2

let the sides be 6x,7x,8x
so if the perimeter is 84cm,
6x+7x+8x=84
21x=84
x=84÷21
x=4cm
6x=6×4=24cm
7x=7×4=28cm
8x=8×4=32cm
according to heron's formula,
$\div2(24 + 28 + 32)$
=42
$\sqrt{42 - 24} \sqrt{42 - 28} \sqrt{42 - 32}$
$\sqrt{18 + 14 + 10}$
$\sqrt{42}$