Question

Find the area of isoscles triangle each side 15 cm and third side 12 cm

Answer 1

Answer:

Isosceles triangle

Solve for area

A=bhb

Answer 2

Answer:

82.5 cm²

Step-by-step explanation:

P = a + b + c

s = P/2

A = $\sqrt{s(s-a)(s-b)(s-c)}$

~~~~~~~~

P = 42 cm

s = 21 cm

A = $\sqrt{21(21-15)^2(21-12)}$ = 3(21 - 15)√21 = 18√21 ≈ 82.5 cm²