tina is cycling at the speed of 10 km/h. how long will she take to make a round of a circular field of radius 50cm . take pie as 3.14
Answers
Answer:
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Step-by-step explanation:
Speed of Tina = 10 km/hr
Radius of the circle = 50 cm
= 50/100000 km
= 0.0005 km
Circumference of the circle = 2πr
= 2 × 3.14 × 0.0005 km
= 0.00314 km
Time = Distance/Speed
= 0.00314/10 hr
= 0.000314 hr
OR
Speed of Tina = 10 km/hr
= 100/36 m/s
Radius of the circle = 50 cm
= 50/100 m
= 0.5 m
Circumference of the circle = 2πr
= 2 × 3.14 × 0.5 m
= 3.14 m
Time = Distance / Speed
= 3.14 / (100/36) seconds
= (3.14 × 36)/100 seconds
= 113.04 / 100 hr seconds
= 1.1304 seconds