the base of an isoceles triangle is 12 cm and the measure of each of its equal side is 15 cm find the area
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Answer:
given :-
base 12 cm
two side 15 cm each.
area = by herons formula.
(12+15+15 )/2
42/2
s= 21
area= √(21-12)×(21-15)×(21-15)
= √9×6×6
6√9
6×3
18 cm ^2 is the area of the isoceles triangle.
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