The radius is 10 cm. Find the perimeter of the quarter of the circle (take r = 3.14).

Given: Radius,  r  =  10 cm

To do: Find the perimeter of the circle.

Solution:

Perimeter of circle  =  $2πr$

The perimeter of the quarter of the circle  =$\frac{2πr}{ 4}$  

where $π  =  3.14 (given)$   

r = 10 cm (given)

Perimeter of the quarter of the circle  = $\frac{ 2 \times 3.14 \times 10}{4}$

                                                                    =   $20 \times \frac{3.14}{ 4}$

                                                                    =  $5 \times 3.14$    [\frac{20}{ 4} = 5]

                                                                    =  15.7 cm

Therefore, the perimeter of the quarter of the circle  = 15.7 cm

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Updated on: 10-Oct-2022

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