Question

area of triangle = 150 cm^2. sides in ratio 3:4:5. find perimeter

Answer 1

Answer:

Let constant be x.

s = 6x

Area = 150 cm²

» √[6x (6x - 3x) (6x - 4x) (6x - 5x)] = 150

» √[6x (3x) (2x) (x)] = 150

» 6x² = 150

» x² = 25

» x = 5

Now,

Perimeter = (3 + 4 + 5) x

= 12 × 5 = 60 cm