Question

Find area of equilateral triangle whose perimeter is 24m

Answer 1

each side will be 8m then area will be
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Answer 2

let the sides of triangle are a
so perimeter(P)=3a
P=24
3a=24
a=8
now
area of equilateral triangle ={(3)^1/2}/4 ×a^2
so area = {(3)^1/2}/4 × 8^2
=(3)^1/2×16
=16 (3)^1/2 m sq..
That's it
hope it will help you