The correct option is D 100√3 m2
Given: Perimeter of an equilateral triangle =60 m
Leteach side of an equilateral triangle be x
∴x+x+x=60
⇒3x=60
⇒x=603=20 m
∴ Area of an equilateral triangle =√34(side)2
=√34×20×20
=100√3 m2
Hence, (d) is the correct answer.