Question

the circumstances of a flywheel is 440 cm .find its radius​

Answer 1

Answer:

We know that , the circumference of the flywhe(say circle)=pier^2

Hence pier^2=440

r^2=440×7/22 (pie=22/7)

r^2=20×7

r^2=140

r=(140)^1/2

r=11.832cm