Question

nagma runs around a rectangular park 180 m long and 120 m wide at the rate of
7.5 km/hour. In how much time will she complete five rounds​

Answer 1

Answer:

Nagma will complete five rounds in 24 minutes.

Step-by-step explanation:

It is given that,

Length of rectangular park = 180 m

Width of rectangular park = 120 m

Perimeter of the park is

Perimeter=2(length+width)Perimeter=2(length+width)

Perimeter=2(180+120)Perimeter=2(180+120)

Perimeter=2(300)Perimeter=2(300)

Perimeter=600Perimeter=600

We needs to find the time taken by Nagma to complete 5 rounds.

1 round = 600 m

5 round = 5×600 = 3000 m = 3 km

Speed of Nagma is 7.5 km/hour.

Time=\dfrac{Distance}{Speed}Time=

Speed

Distance

Time=\dfrac{3}{7.5}Time=

7.5

3

Time=0.4Time=0.4

Nagma will complete five rounds in 0.4 hours.

We know that 1 hour = 60 minutes.

0.4 hours = 0.4×60 = 24

Therefore, Nagma will complete five rounds in 24 minutes.

#Learn more

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https://brainly.in/question/310361

Answer 2

Answer:

length = 180m. breadth =120

perimeter =2*(l+b)=2*(180+120)=2*300=600m

distance covered in 5 round =5*600=3000metre=3km

speed =7.5km/h

time = distance /speed =3/7.5=30/75=2/5=0.4 hours = 24 minutes

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