Question

a rectangular park is next to a wall 15.5 metres of fencing is used to fence the remaining three sides of the park if the wall is along the length of the park and its breadth is 3.45 m find the cost of covering the park grass at rupee 12.50 per square metre​

Answer 1

Answer:

668.4375 ₹

Step-by-step explanation:

Area of rectangular park = L*B

                                         = 15.5*3.45

                                         = 53.475 m

Therefore, cost = 53.475*12.50

                          = 668.4375₹

Answer 2

Find the length of the park:

Given that one side of the length is a wall, so the perimeter of the fence is made up by 3 sides only.

Perimeter = Length + breadth + breadth

15.5 = Length + 3.45 + 3.45

15.5 = Length + 6.9

Length = 15.5 - 6.9

Length = 8.6 m

Find the area:

Area = Length x Breath

Area = 8.6 x 3.45  = 29.67 m²

Find the cost:

1 m² = Rs 12.50

29.67 m² = 12.50 x 29.67 =  Rs 370.88

Answer: The cost is Rs 370.88