The base of an isosceles triangle measures 80cm and its area is 360cm² . Find the perimeter of the triangle.

Let us assume be an isosceles triangle and let AL perpendicular BC

It is given that,

BC = 80 cm

Area of triangle ABC = 360 cm²

We know that,

Area of triangle =

= 360 cm²

= 360 cm²

= 360 cm²

=

= 9 cm

Now,

BL =

= (

= 40 cm

a =

=

=

=

= 41 cm

Therefore,

Perimeter of the triangle = (41 + 41 + 80) = 162 cm