Area of Sector
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An arc of a circle is of length 5π cm and the sector it bounds has an area of 20π cm2 . The radius of the circle is _______(in cm).
12
10
5
8
Is Pi equal to degrees.
- 77 cm2
- 154 cm2
- 42 cm2
- 22 cm2
Question 120
A rectangular field is 48 m long and 12 m wide. How many right triangular flower beds can be laid in this field, if sides including the right angle measure 2 m and 4m, respectively?
- 462 cm2
- 692 cm2
- 924 cm2
- 1268 cm2
- 154 cm2
- 308 cm2
- 616 cm2
- 1232 cm2
- 77 cm2, 450
- 154 cm2, 400
- 231 cm2, 450
- 441 cm2, 400
- 616 cm2
- 1232 cm2
- 2462 cm2
- 308 cm2
- 38.5 cm2
- 97.5 cm2
- 59.5 cm2
- 76 cm2
The area of a sector (in cm2 )of a circle with radius 6 cm if angle of the sector is 70∘ will be
Find the area of a sector of a circle with radius if angle of the sector is
Area of a sector of angle θ with radius r is:
[227×r2×θ]360
[227×r×θ]360
[227×r2×θ]180
[227×r×θ]180
- 154 cm2
- 77 cm2
- 112 cm2
- 308 cm2
The length of a minute hand of a clock is Area swept by it in minutes be
None of these
- 14.13 cm2
- 39.25 cm2
- 65.38 cm2
- 85.38 cm2
- 231 cm2
- 341 cm2
- 462 cm2
- 693 cm2
In a circular table cover of radius $ 32 \mathrm{cm}$, a design is formed leaving an equilateral triangle $ \mathrm{ABC}$ in the middle as shown in Fig. Find the area of the design.
The length of the minute hand of a clock is 14 cm. Find the area in cm2 swept by the minute hand in 5 minutes.
51.3
55.1
60.2
70.8
Find the area of the sector in a clock swept by the minute hand in five minutes if the radius is 14 cm.
(Take π as 227)
616 cm2
- 51.33 cm2
- 42 cm2
- None of the above
- 4.9 sq ft
- 5 sq ft
- 4.5 sq ft
- 4.7 sq ft
- 2.791 cm2
- 5.024 cm2
- 1.432 cm2
- 3.836 cm2
State true or false.
The area in cm2 of a sector of a circle with radius 6 cm and angle of the sector 60∘ is 20.
True
False
The area of a sector (in cm2 )of a circle with radius 6 cm if angle of the sector is 70∘ will be
The area of a sector with radius 14 cm is 154 cm2. The central angle of the sector (in degrees) is
90∘
180∘
45∘
270∘
In a restaurant, WiFi signal has to be provided only to the deluxe class. Signal reaches each of the customer upto a distance of 21 m from the antenna and the total area for which signal to be provided is 231 m2. What is the angle (in degrees) at which the signal has to be spread over a sector by the antenna?
60
180
45
90
Area of a sector of angle p (in degrees) of a circle with radius R is
[4 marks]
A(△AOB)=3 sq.cm
A(△COD)=12 sq.cm
A(□ABCD)= ______
- 27 sq.cm
- 45 sq.cm
- 36 sq.cm
- 18 sq.cm