A square and an equilateral triangle have equal perimeters. If the diagonal of the square is 12√2 cm, find the area of triangle....
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diagonal of a square = side×root 2
side ×root 2 =12 root 2
side = 12 cm
perimeter of sq.=12×4=48
perimeter of tri.=3 × a= 48
which is 16
area of equi tri .root 3/4a^2=root 3
64root 3 is the answer
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