1] the perimeter of a quadrant of a circle of radius ' r ' is _.

2] Area of a quadrant of circle whose circomference is 22cm is __.

Question

1] the perimeter of a quadrant of a circle of radius ' r ' is
___________
2] Area of a quadrant of circle whose circomference is 22cm is
____________

Chetna Khanna · Accepted Answer

(1) Perimeter of quadrant of radius r = $\frac{π r}{2} + 2 r$

(2) Perimeter of quadrant = 22 cm

$∴ \frac{π r}{2} + 2 r = 22 \Rightarrow r (\frac{22}{7 \times 2} + 2) = 22 \Rightarrow r (\frac{25}{7}) = 22 \Rightarrow r = \frac{22 \times 7}{25} = 6.16 c m$

Area of quadrant = $\frac{π r^{2}}{4}$

$= \frac{1}{4} \times \frac{22}{7} \times 6.16 \times 6.16 c m^{2} = 29.8144 c m^{2}$

1] the perimeter of a quadrant of a circle of radius ' r ' is ___________. 2] Area of a quadrant of circle whose circomference is 22cm is ____________.

1] the perimeter of a quadrant of a circle of radius ' r ' is _.

2] Area of a quadrant of circle whose circomference is 22cm is __.