Question

The sides of triangle are in ratio 3:5:7 and its perimeter is 120 cm find the area of triangle​

Answer 1

Answer:

Step-by-step explanation:The area of triangle​ is 10392.3048 sq.cm.

Area = 10392.3048 sq.cm. Hence The area of triangle​ is 10392.3048 sq.cm

Answer 2

Answer:

162.37 cm²

Step-by-step explanation:

Let the sides are 3x,5x and 7x

Perimeter=3x+5x+7x=15x=120

x=8 cm

Thus sides care 15,25 and 35 cm

s=(15+25+35)/2=75/2=37.5 cm

Using Heron's formula

So area S=√s(s-a)(s-b)(s-c)

=√(37.5*22.5*12.5*2.5)

=√(26367.1875)

=162.37 cm²