Question

Q25 The isosceles triangle has perimeter 40cm and each of the equal sides is 12cm.

The area of triangle is:

A) 9√2cm2

B) 32√3 cm2

C ) 9√5 cm2

D) 32√5 cm2

​

Answer 1

Answer:

32√5 cm²

Step-by-step explanation:

40 - 24 = 16 cm

$Area_{triangle} \sqrt{20(20-12)^2(20-16)} = 2^{5}\sqrt{5}=32\sqrt{5} cm^2$

A = 32√5 cm²