Question

A square field and an equilateral triangle park have equal perimeter. If the cost of ploughing the field at the rate of Rs 5/m2 is Rs 720. Find the cost of maintaining the park at the rate of Rs 10/m2?

Answer 1

area of square = S²

total cost to plough the field = area x cost
720 = S² x 5
S= 12m

As the perimeter is equal 
so, perimeter of square = perimeter of triangle 
4S = 3 x side of triangle
48 = 3a
a = 16

area of equilateral triangle = √3/ 4a²
= √3 / 4 x 16²
= 108.8 m²

total cost = 10 x 108.8 
= 1088 rs

Answer 2

Answer:

Step-by-step explanation: