Maths-

General

Easy

Question

# A circle has a diameter of 120 metres. Your average walking speed is 4 kilometres per hour. How many minutes will it take you to walk around the boundary of the circle 3 times? Round your answer to the nearest integer.

Hint:

### Given , the diameter of circle .Now find the perimeter of circle by using circumference of circle where d is the diameter of a circle.

Now find total distance and speed is given .so, find time taken by using formula.

## The correct answer is: time = 0.1885 60 mins = 11.3097 mins (11 is the nearest integer)

### ANS :- Time taken to walk 3 times around the circle is 11 mins (approx.)

Explanation :-

Given , the diameter of the circle is 120 m .The no. of round need to cover = 3

Given , the speed = 4 km / hr

circumference of circle

The total distance = no. of rounds × circumference of circle

The total distance

We get

hrs = 0.1885 hrs

As we know 1 hour = 60 mins

As time = 0.1885 × 60 mins = 11.3097 mins (11 is the nearest integer)

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