Question

find the area of an equilateral triangle,whose perimeter is 18cm.​

Answer 1

Answer:

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Answer 2

Answer:

perimeter of the equilateral triangle is 18 cm

so, side of the triangle is 18/3 cm=6 cm

area of the equilateral triangle is

√3/4 .side ^2

=√3/4.(6)^2 sq cm

=√3/4.36 sq cm

=9√3 sq cm