Question

1) Base of isosceles triangle is 3/2 of equal side.If its perimeter is 28 m , then find the area.

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Answer 1

Answer:

3/2 × 2x = 28m

or, 2x = 28 × 2/3 = 56/3 = 18.6666.... or 18.7 m (approx.)

or, x = 18.7/2 = 9.35 m

Perimeter = 2(9.35) + 1.5 = 20.2m

Semi perimeter = 20.2/2 = 10.1m

Area = √s(s-a)(s-b)(s-c)

Area = √10.1(10.1-1.5)(10.1-9.35)(10.1-9.35)

Area = 6.9899 sq.m(approx.)

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