Find the area of an isosceles triangle, whose equal sides are of length 15 cm each and third side is 12 cm.

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asked Oct 3, 2018 in Class IX Maths by navnit40 (-4,746 points)

Find the area of an isosceles triangle, whose equal sides are of length 15 cm each and third side is 12 cm.

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answered Oct 3, 2018 by priya12 (-12,564 points)

Area of isosceles triangle = 12/4 root under(4 x 152 - 122)  = 12/4 root under (√900 - 144)

= 3√756 = 3 x 6√21 = 18√21 cm2

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