Question : The radius of a wheel is 3.5 cm. What is the distance (in cm.) traveled by the wheel in 20 revolutions?

Option 1: 220

Option 2: 440

Option 3: 880

Option 4: 1320

Question : The radius of a wheel moving on a road is $8\frac{3}{4}$ cm. How many rounds it will take to complete the 55 metres distance?

Option 1: 10

Option 2: 11

Option 3: 100

Option 4: 55

Question : A sector is formed by opening out a cone with a base radius of 8 cm and height of 6 cm. Then the radius of the sector is (in cm):

Option 1: 4

Option 2: 8

Option 3: 10

Option 4: 6

Question : What is the curved surface area (in cm²) of a cylinder having a radius of base as 14 cm and height as 10 cm?

Option 1: 440

Option 2: 880

Option 3: 220

Option 4: 1320

Question : What is the radius of a normal cylinder whose height is 21 cm and curved surface area is 1386 cm²?

Option 1: 10.5 cm

Option 2: 3.5 cm

Option 3: 7 cm

Option 4: 10 cm