Question

What will be the circumference of a circular plate whose radius is 28 cm​

Answer 1

Given:

Radius of the circular plate = 28 cm

To find:

The circumference of the circular plate.

Solution:

The formula for the circumference of  a circular plate = 2 × π × r

Here r is the radius of the circular plate and we will take the value of π as 22/7.

Putting the values we get:

= 2 × 22 / 7 × 28

On solving we get:

= 176 cm

Therefore, the circumference of the circular plate will be 176 cm.

Answer 2

SOLUTION

TO DETERMINE

The circumference of a circular plate whose radius is 28 cm

FORMULA TO BE IMPLEMENTED

If radius of circle = r unit then

Circumference of the circle = 2πr unit

EVALUATION

Here it is given that the radius of the circular plate = r = 28 cm

Hence the required circumference of the circular plate

= 2πr cm

$\displaystyle \sf{ = 2 \times \frac{22}{7} \times 28 \: \: \: cm}$

$\displaystyle \sf{ =2 \times 88 \: \: \: cm}$

$\displaystyle \sf{ =176\: \: \: cm}$

FINAL ANSWER

The circumference of a circular plate whose radius is 28 cm = 176 cm

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