Question

Sides of triangle are in ratio 3 5 7 with perimeter 300m find area

Answer 1

s1=3x

s2=5x

s3=7x

perimeter=300m

300=3x+5x+7x

300=15x

x=300/15

x=20

s1=3×20=60

s2=5×20=100

s3=7×20=140