Question

an isosceles triangle has perimeter 50 cm and each of the equal side is 20 cm find the area of trianglean isosceles triangle has perimeter 50 cm and each of the equal side is 20 cm find the area of triangle ​

Answer 1

Answer:

Given:-

Base = perimeter - 20 × 2 = 10 cm

Each of the equal side = 20 cm

Semi perimeter = 10 + 20+ 20/2

= 50 / 2

= 25 cm

Hence, area = √s(s-a)(s-b)(s-c)

= √25 × 5 × 5 × 15

= √9375

= 96.82458 cm² (approx.)

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