Question

Sides of a triangle are in the ratio of 3:4:5 and its perimeter is 60m. Find area of this triangle
A) 40m
B) 150m
C) 300m
D) 60​

Answer 1

Answer:

Area of the triangle is 150 by herons formula

Answer 2

Answer:

B.)150m

Let the common multiple be X

So 3x +4x + 5x=60

12x=60

X=5

Therefore sides are 15, 20 , 25

Area of triangle = √s(s-a)(s-b)(s-c)

Area of ∆ = √30 (30-15)(30-20)(30-25)

Area of ∆= √30×15×10×5

Area of ∆ =25×6

Area of ∆= 150m