Question

A park is shaped like an equilateral trainalge and its perimeter is 90 m.The grass planter has quoted a rate of rs 17 per square metre. What will be the cost of planting grass in this park

Answer 1

Perimeter of an equilateral triangle =3a
therefore, 90m=3a
90/3=a
therefore 30metres=a
area of an equilateral triangle= √3÷4×a×a
therefore area=389.71 meter square

so, the cost of planting grass= (389.71×17) rupees
=6,625.07 rupees