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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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