Question

Find the area of the following polygons ? how to I solve this

Answer 1

The area of a triangle is found by multiplying the base by the height. Problem is, that in this example with 3 different sides, you can't easily find out the height.

To the rescue comes Heron's formula:


`s = (a+b+c)/(2)`

and


`A = √(s(s-a)(s-b)(s-c))`

So s = (25+26+21)/2 = 36

and Area = √36·11·10·15 ≈ 243.7