Question

An isosceles triangle has perimeter 84 cm and
each of the equal sides is 30 cm. Find the
area of the triangle.​

Answer 1

Answer: here is the answer

Step-by-step explanation:

Let The Third Side Be xcm.

Now Perimeter = 12+12+x

24+x = 30

x = 6

Now Find The Area Using Herons Formula

Semiperimeter = 30/2 = 15

Sq Root(15(15-12)(15-12)(15-6) ) = Sq Root(15*3*3*9) = Sq Root(1215) = 34.85 cm^2

So Area is 34.85cm^2