Question

29. If the perimeter of an isosceles triangle is 64 and its equal sides are 20 . Then, find the area of

an isosceles triangle.​

Answer 1

Step-by-step explanation:

Perimeter = x + x + y

64 = 40 + y

y = 24 cm

where x is the equal side and y is non equal one.

area = 1/2 * base * height

height nikalni oadegi pythagoras theorem se -_-

see the attachement for height..

therefore height = 16 cm

area = 1/2 * 24* 16

= 12*16 ==>192cm²

hope it helps you