Question

how many times a wheel of radius 14 cm must rotate to go 352

Answer 1

SO FIRST CIRCUMFERNCE

ITS CIRCUMFERENCE = 2πr = 88 cm^2
Number of rounds = 352/88 = 4

Answer 2

Given,

• The radius of the wheel = 14 cm
• The distance to be covered by the wheel = 352 cm

To find,

• We have to find the number of times a wheel of radius 14 cm must rotate to go 352 cm.

Solution,

We can simply find the number of times a wheel of radius 14 cm must rotate to go 352 cm by using the following formula:

  Number of rotation = distance to be covered/ circumference of the wheel         (*)

The radius of the wheel = 14 cm

As we know,

            Circumference of the wheel = 2πr

                                                             = 2 * 22/7 * 14

                                                            = 88 cm

The distance covered by the wheel in one rotation= circumference of the wheel

So, the distance covered by the wheel in one rotation = 88 cm

Then, using the (*), we get

Number of rotations = 352/88

                                  = 4

Hence, 4 times a wheel of radius 14 cm must rotate to go 352 cm.