Question

?the sum and the difference of two sides of a triangle is 52cm and 8cm . if the third side of the triangle is 36 cm. find the area of triangle??

Answer 1

Let a, b, c be sides of triangle
a+b=52
a-b=8
By elimination method [refer the calculation in image]
2a=44
a=30
b=22
c=36 (given)
By using heron's formula :s=(30+22+36)/2
=44
Area = [image attached]