Question

Unless otherwise stated, use
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1. The perimeter of a certain sector of a circle of radius 6.5 cm is 21 cm. Find the area
of the sector.
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2. The radius of a circle is 6 cm and the area of a sector of this circle is 18cm. What
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is the angle of the sector?
3. The circumference of a circle is 176 cm. Find the area of a sector whose sectorial
angle is 45°
4. The area of a sector of a circle of radius 21cm is 462 cm. Find the length of the are
of the sector.
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Find the sectorial angle and area of the sector of a circle if the arc length of the
corresponding sector is 8.8 cm and the radius of the circle is 5.6 cm.
The minute hand of a wall clock is 4.2 cm long. Find the area swept by it in 20 minutes.
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Answer 1

Answer:

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