Question

the base of an isosceles triangle is 18 cm and its area is 108 cm2 find its perimerter

Answer 1

Hey mate here is your answer

Using the formula to find area of a triangle, 1/2(b)(h).

We can write, 1/2 (18)(h)=108

=9h=108

=h=108/9=13cm_ height meaning the equal sides of the isocelus triangle.

Perimeter=12+12+18=42 cm^.

Hope it helped you :)

Answer 2

1/2*b*h=108
1/2*18*h=108
h=108*2/18
h=6*2=12 .
then'perimeter be
a+ b+ c= 15+12+12
=39cm2 ans