The perimeter of an isosceles triangle is 42 cm if length of one of the equal side is 15 cm then find the area of the triangle
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Equal sides= 15 cm
2 sides are 15 cm each
Other side is 12cm
S=21cm
Area=root over 21 (21-15)(21-15)(21-12)
=root over 21×6×6×9
=root over 6804
= 82.48 square cm
2 sides are 15 cm each
Other side is 12cm
S=21cm
Area=root over 21 (21-15)(21-15)(21-12)
=root over 21×6×6×9
=root over 6804
= 82.48 square cm
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