Question

The length and breadth of a playground are 63.5 m and 36.5 m, respectively. How long
will a man take to go round the playground thrice if he walks at the rate of 2 m/s? Also
find the cost of turfing it at 4 per square metre. answer the question plz . And follow me ​

Answer 1

Answer:

Time to run around the ground thrice= 300 seconds ( 5 minutes )

Cost of turfing = Rs. 9271

Step-by-step explanation:

Perimeter of the rectangle = 2(Length + Breadth)

= 2(63.5 + 36.5)

= 2(100)

= 200 metres.

Distance covered by man in walking thrice around the ground = 3 x Perimeter of the rectangular ground

= 3 x 200

= 600 metres

Time = Distance /  Speed

Distance covered = 600 metres

Speed = 2 metres

So time = 600 / 2

= 300 seconds ( 5 minutes )

For turfing we should find the area of the rectangular ground

Area of rectangle = Length x Breadth

= 63.5 x 36.5

= 2317.75 metres²

Cost of turfing 1 metre² = Rs. 4

Cost of turfing 2317.75 metres² = 4 x 2317.75

= Rs. 9271