Question

find the area of a triangle whose sides are 21 m 28 M and 35 m​

Answer 1

Answer:

294

Step-by-step explanation:

At first find semi perimeter of the triangle. Which is given by the sum of all sides divided by 2.

Then to find area the formula is

root of { s(s - a)(s - b)(s - c) }  

Where a, b, c are the sides of triangle.

Putting values in equation:

s =  (21+28+35)/2 = 84/2  = 42

area : root of [ s (s-a)(s-b)(s-c) ]

area of triangle = root of 8436 = 294

Answer 2

The area is 294 sq.m