Question

Tina is cycling at the speed of 10 km per hour. How long will it take to make a round of a circular field of radius 50 cm? Take pie is equal to 3.14 ​

Answer 1

Given speed = 10kmph

Given ; r = 50cm

Thus circumference = 2πr

• c = 2 × 3.14 × 50
• c = 100 × 3.14
• c = 314 cm = 3.14m = 0.0314km

Thus we know that s = d/t

then t = d/s

Thus t =

• 0.0314/10
• 0.00314 hr

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