Question

A rectangular field is 72m by 58m.Keya walks around it at the rate of 3km per hour.How long will she take to make 3 rounds?

Answer 1

First we will find the distance she will cover when she makes the three rounds

Length of one round (perimeter of rectangle) = 2 (72 + 58) = 2(130) = 260m
Total length of three rounds = 3*260 = 780m = 780/1000 = 0.78km
Time to make three rounds = Distance/Speed = 0.78/3 = 0.26 hours = 15.6mins

Answer 2

Answer:

Step-by-step explanation:

First we will find the distance she will cover when she makes the three rounds

Length of one round (perimeter of rectangle) = 2 (72 + 58) = 2(130) = 260m

Total length of three rounds = 3*260 = 780m = 780/1000 = 0.78km

Time to make three rounds = Distance/Speed = 0.78/3 = 0.26 hours = 15.6mins