Question

please answer me this question..​

Answer 1

Answer:

diameter = 77cm

circumference = πd = 22/7 x 77 = 242 cm = 2.42m

distance to be travelled = 121 km = 121000 m

no. of revolutions = distance to be travelled/circumference

= ( 121 x 10³ x 10² ) ÷ 242 = 10⁵/2 = 1,00,000/2

= 50,000 revolutions

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Answer 2

Answer:

5000 revolutions

Step-by-step explanation:

C= 2 pi r

r = 77/2 = 38.5

C = 2*22/7 * 38.5

C= 2*22*5.5

C = 242cm

121 km = 1210000

Revolutions = 1210000/242

= 5000 revolutions

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