Question

Please solve 18th question.
Base of an isosceles triangle=12cm
Perimeter=32cm.
find its area =?​

Answer 1

Let x be the equal side.because isosceles triangle's two side are equal...

Perimeter=>2x+12=32.

x=10cm.

Height of the base=8 (by solving using Pythagorean theorem).

Area of triangle=1/2*b*h.

Area of triangle =1/2*12*8.

Area of triangle=48cm^2.

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