Question

a rope makes 70 rounds of the circumference of a cylinder whose radius of the base is 14 cm . how many times can it go round a cylinder with radius 20 cm?

Answer 1

Answer:

49 rounds

Step-by-step explanation:

circumference of cylinder = 2πr

= 2 × 22/7 × 14

= 2 × 22 × 2

= 22 × 4

= 88 cm

70 rounds are made around the cylinder

therefore the length of rope

= 70 × 88

= 6160 cm

number of rounds made by rope of length 6160 on the circumference of cylinder with radius 20 cm

6160 = x × 2 × 22/7 × 20

6160 = x × 44×20/7

6160 = x × 880/7

x = 6160 × 7/880

x = 7 × 7

x = 49

therefore the number of rounds made are 49

hope you get your answer

Answer 2

Hope this will Help u Dear