A diameter of a wheel of a cycle is 70 cm. What is the distance travelled in 21 revolutions?
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Answered by
0
Answer:
diameter = 70 = 70/2 = 35 (radius)
according to question :-
circumference = 2πr = 2*22/7*35 = 225 cm
now one revolution = 225cm
so 21 revolutions = 225 *21 = 4725cm
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Answered by
0
Answer:
Distance covered in one revolution= Circumference of the circle= 2πr
= πd
= 22/7 × 70 cm = 220 cm
Distance covered in 21 revolutions = 220× 21 cm = 4620 cm ----(Ans)...
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