Question

A rectangular Garden is 82 m by 6 8 metres. Geetha walk around it at the rate of 2.5 km per hour. what time will she take in making 10 round.

Answer 1

Answer:

Step-by-step explanation:

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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:

36 min

Step-by-step explanation:

perimeter = 2(l+b)

2(82+ 68) = 300

making 5 rounds

so,

300×5=1500m

change in km

1500÷ 1000 = 1.5 km

by applying formula,

distance/ speed

1.5 /2.5 =3/5 hrs

changing in minute

3/5×60= 36 min