Advertisements
Advertisements
प्रश्न
The area of sector is one-twelfth that of the complete circle. Find the angle of the sector .
उत्तर
We know, `A= θ/360xx "Area of the circle"` ..........(1)
Let the area of the circle be Ar.
Thus area of the sector =` 1/12 Ar` ..........(2)
From (i) and (ii) we have
`1/12 Ar = θ/360xx Ar`
`⇒ 360/12=θ`
`⇒ θ=30°`
APPEARS IN
संबंधित प्रश्न
The perimeter of a rectangular plot of land is 80 m and its breadth is 16 m. Find the length and area of the plot.
In the following figure, ABCD is a rectangle, having AB = 20 cm and BC = 14 cm. Two sectors of 180° have been cut off. Calculate:
the area of the shaded region.
In the following figure, the area of the shaded region is
ABCD is a square of side 4 cm. If E is a point in the interior of the square such that ΔCEDis equilateral, then area of Δ ACE is
What is the diameter of a circle whose area is equal to the sum of the areas of two circles of diameters 10 cm and 24 cm?
The length of an arc of the sector of angle θ° of a circle with radius R is
The diameters of three circles are in the ratio 3: 5: 6. If the sum of the circumferences of these circles is 308 cm; find the difference between the areas of the largest and the smallest of these circles.
The area of the circular ring enclosed between two concentric circles is 88 cm2. Find the radii of the two circles, if their difference is 1 cm.
Lalitha wants to buy a round carpet of radius is 63 cm for her hall. Find the area that will be covered by the carpet
The radii of the two circles are 4 cm and 3 cm respectively. The diameter of the circle having an area equal to the sum of the areas of the two circles (in cm) is ____________.
