Question

An isoceles triangle has perimeter 30cm and each of its sides is 12cm. Find the area of the triangle.​

Answer 1

Answer:

9 root 15 cm^2

Step-by-step explanation:

Semi - perimeter (s)= 30/2 = 15 cm

use heron's formula

root(s(s-a)(s-b)(s-c))

a = 12cm

b = 12cm

c = 30-12-12

=6cm

root(15(15-12)(15-12)(15-6)

=root(15*3*3*9)

=9 root 15 cm^2

Hope it helps