Question

A wheel make 25revolution to caver a distance of 66 m fund the diameter of the wheel

Answer 1

Answer:

Step-by-step explanation:

curved surface area of the circle=2πr

number of revolution=25

so

⇒66*1000=25{2πr}

⇒66*1000/25=2*22/7*r

⇒[66*1000]*7/2*22=r

⇒3*20*7=r

⇒420=r

420 cm is radius

and diameter is 420*2=840 cm