Question

The sides of a triangle are 100m, 120m and 140m. The area of the triangle in sq.m

Answer 1

Answer:

Step-by-step explanation:

Given,

The sides of triangle are 100m, 120m and 140m

Semi - perimeter: 100 + 120 + 140 / 2

s = 360 / 2

s = 180

So,

The area of triangle = √ s (s - a) (s - b) (s-c)

Area = √ 180 (180 - 100) (180 - 120) (180 - 140)

Area = √ 180 × 80 × 60 × 40

Area = √ 34,560,000

Area = 5878.77 m^2

Answer 2

Semi perimeter = 360/2=180m

Using Heron’s formula ,
Area=root of s(s-a)(s-b)(s-c)
=root of 180*80*60*40= 5,878.775382679625728 m^2