Question

if unequal side of an isosceles triangle is 6cm and it's perimeter is 24 cm. find its area by using heron's formula.

Answer 1

Let the equal side be x
So 6+x+x=24
2x=18
x=9

s=24/2=12

area=√12(12-6)(12-9)(12-9)
=√12×6×3×3
=18√2 sq.cm

Answer 2

Here is your solution