Question

1. The diameter of a wheel of a car is 42 cm. Find the distance it will cover in 250 revolutions .

please do in your copy​

Answer 1

dia = 42 cm

radius = 21 cm

distance in 1 rev = 2 × 22/7 × 21 = 132 cm

distance in 250 rev = 132 × 250 = 33000 cm or 330 m

Answer 2

Answer:

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the process by which green plants prepare their own food is called photosynthesis