Question : The arc length of a sector of a circle that subtends a $22.5^{\circ}$ angle at the centre is given as $16.5$ cm. What will be the radius (in cm) of the circle? [Use $\pi=\frac{22}{7}$]

Option 1: 35

Option 2: 49

Option 3: 42

Option 4: 48

Question : The area of a sector of a circle is 616 cm² with a central angle of 10°. The radius of the circle is_____.
(use $\pi=\frac{22}{7}$)

Option 1: 84 cm

Option 2: 21 cm

Option 3: 48 cm

Option 4: 28 cm

Question : The radius of a circle is 21 cm. What will be the length (in cm) of an arc of the circle that subtends a 22.5° angle at the centre? [Use $\pi=\frac{22}{7}$]

Option 1: 8.25

Option 2: 7.25

Option 3: 8.50

Option 4: 7.50

Question : In a circle of radius 14 cm, an arc subtends an angle of 90° at the centre. The length of are (in cm) is equal to: (Take $\pi=\frac{22}{7}$)

Option 1: 22

Option 2: 18

Option 3: 20

Option 4: 24

Question : In a circle, an arc subtends an angle of 84° at the centre. If the length of the arc is 22 cm, then the radius of the circle (in cm) is equal to:
Take $\pi=\frac{22}{7}$

Option 1: 19

Option 2: 15

Option 3: 17

Option 4: 13