14. A rectangular park is 104 m long and 56 m wide . Anjali walks around it at the rate of 4 km / h . What time will she take in making 5 rounds of the park ?
with solutions
Answers
Answer:Given:
A rectangular park is 104 m long and 56 m wide.
To find:
Time is taken by Anjali to complete the 5 rounds.
Solution:
Distance covered in one round is given by the perimeter of the park
The perimeter of the park is given by:
2(L+B)
2(104+56)
2×160
320 m
Distance in 5 rounds:
5×320
1600m
The Speed of Anjali is 4 km/h
4000 m ----------- 60min
1 m ------------------ 60/4000
1600 m ------------- 60×1600/4000
1600 m ------------- 24 min
Time taken by Anjali to complete the 5 rounds is 24 min.
Step-by-step explanation: mark me brilliant
Step-by-step explanation:
Perimeter of rectangular park =2×(length+ breadth)
,=2×(104m+56m)
=2×160m
=320m
Distance covered in 5 rounds=320m×5=1600m or 1.6km
Anjali walks around the park at the rate of 4km/hour
=1.6/4 =0.4hours
1 hour=60min
0.4×60min=24minutes
Anjali took 24 minutes to cover 5 rounds of park.