Question

the sides of a triangular plot are in the ratio of 3:5:7 and its perimeter is 300m find its area .please find the answer and post it ASAP​

Answer 1

Step-by-step explanation:

let the side be 3x 5x and 7x

3x+5x+7x=300

15x=300

x=20

sides are 60m,100m,140m

and manu find the area by using heron formulae

s=300/2

=150

heron formulae=√s(s-a)(s-b)(s-c)

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Answer 2

Step-by-step explanation:

Sincthe the lengths are given inthe form of ratios, letthe sides be 3x,5x,7x.

So 3x+6x+7x=300

15x=300

x=20

So the sides are 60m,100m,140m.

And by using herons formula area of a triangle =

√s(s-a)(s-b)(s-c) where s is semiperimeter, a,b,c are sides.

So s=150

Area=√150(150-60)(150-100)(150-140)

=√150*90*50*10

=1500√3m.

So the area of the triangle is 1500√3 m.