Question

10. The lengths of the sides of a triangle are in
the ratio 4:5: 3 and its perimeter is 96 cm.
Find its area.
the answers is
$384cm {}^{2}$
I have given the answers above the chapter is mensuration area of a Trapezium and a polygon please do in class 8th standard explain the method and solve it. only solve if you know otherwise don't solve thank you .​ don't give me any reply If you are going to write rubbish ​​

Answer 1

Answer:

Step-by-step explanation:

Let sides

4x

5x

3x

Perimeter= sum of sides

5x+ 4x+ 3x=96

12x = 96

X= 96/12=8

Sides will be

3

5x= 40

4x=32

3x=24

It is a right angled triangle

Because (32)^2 + (24)^2 = (40)^2

Area of triangle=1/2 × 32× 24

768/2 =384