Question

Please help me solve this question of triangles

Answer 1

Step-by-step explanation:

Let the sides be 4x, 5x and 7x.

Area =

$\sqrt(s(s - a)(s - b) (s - c))$

s = (a + b + c) /2 = (4x + 5x + 7× )/2= 8x

$400sqrt{6} = \sqrt(8x)(4x)(3x)(x)$

X = 10 cm

therefore, perimeter = 2s = 2 * 8x = 16x = 16 × 10 = 160cm