Number and Algebra
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Geometry & Trigonometry
Statistics & Probability
Calculus
Calculate the area of a sector with radius r=5r = 5r=5 cm and central angle θ=π3 \theta = \frac{\pi}{3}θ=3π rad.
Find the area of a sector with radius 121212 cm and central angle 2π5\frac{2\pi}{5}52π rad.
Find the area of a sector of a circle with radius 101010 cm and central angle 60∘60^\circ60∘.
A sector has radius 777 cm and central angle 120∘120^\circ120∘. Calculate its area.
A sector of a circle has radius 151515 cm. If its area is 45π cm245\pi\text{ cm}^245π cm2, find the central angle in radians.
The area of a sector is 50 cm250\text{ cm}^250 cm2 and its angle is π2\frac{\pi}{2}2π rad. Find the radius of the circle.
The area of a sector is 18π cm218\pi\text{ cm}^218π cm2 and its radius is 666 cm. Determine the central angle in radians.
A circle of radius 999 cm has a sector with central angle 45∘45^\circ45∘. Calculate the sector area to two decimal places.
Find the radius of a circle if a sector of angle 222 rad has area 200 cm2200\text{ cm}^2200 cm2.
A sector has radius 888 cm and area 80 cm280\text{ cm}^280 cm2. Calculate the central angle in radians.
Given the arc length of a sector is 10π10\pi10π cm and radius 101010 cm, find the area of the sector.
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Question Type 2: Calculating the arc length given a radius and specific angle
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Question Type 4: Applying both arc length and area of sector in solving equations