Question

1. Side of square is 25 m. the length and breadth of rectangle are 30 m and 20 m. find the perimeters of both. What do you infer from the answers?
2.Find the cost of fencing an equilateral triangular park of side 125 m at the rate of Rs 30 per metre.
3.Find the cost of fencing a rectangular park of length 50 m and breadth 20 m at the rate of Rs 12 per metre.​

Answer 1

length of square= 25m

parameter of square =4a

hence =4(25)

answer = 100m

length of rectangle= 30m

breath of rectangle= 20m

parameter of rectangle 2(l+b)

hence. 2(30 + 20)

answer. 100m

side of triangle. 125m

parameter of triangle. 3*125 = 375m

therefore cost of fencing is 375*30

answer. = 11250

length = 50m

breath = 20m

parameter 140m

cost of fencing 140*12 =

answer. 1680