An isosceles triangle has perimeter 30cm and each of the equa sides is 12cm. Then the area of the triangle is:
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Answer:
36 sq. cm
Step-by-step explanation:
perimeter of isosceles triangle = 2 side+ base
30 CM = 2 × 12 CM + base
30 CM = 24 CM + base
base= 30 CM - 24 CM
base = 6 CM
Area of isosceles triangle = 1/2 ( base× height)
= 1/2( 6 CM × 12 cm)
=1/2(72 sq. CM)
=36 sq. cm
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