Advertisements
Advertisements
प्रश्न
The formula used to find the area of the circle is ________ sq.units
पर्याय
4πr2
πr2
2πr2
πr2 + 2r
Advertisements
उत्तर
The formula used to find the area of the circle is πr2 sq.units
APPEARS IN
संबंधित प्रश्न
The cost of painting the four walls of a room 12 m long at `₹ 30 per m^2 is ₹ 7560 per m^2` and the cost of covering the floor with the mat at ₹` 25 per m^2 is ₹ 2700 `. find the dimensions of the room.
The diameter of a coin is 1 cm (in the following figure). If four such coins be placed on a table so that the rim of each touches that of the other two, find the area of the shaded region (Take π = 3.1416).

In the the following figure, PSR, RTQ and PAQ are three semicircles of diameter 10 cm, 3 cm and 7 cm respectively. Find the perimeter of shaded region.

If the adjoining figure is a sector of a circle of radius 10.5 cm, what is the perimeter of the sector? (Take \[\pi = 22/7\])

If the area of a sector of a circle bounded by an arc of length 5π cm is equal to 20π cm2, then its radius is
The radius of a circle is 20 cm. It is divided into four parts of equal area by drawing three concentric circles inside it. Then, the radius of the largest of three concentric circles drawn is
The area of the sector of a circle of radius 10.5 cm is 69.3 cm2. Find the central angle of the sector.
The area of a circle is 98.56 cm2. Find its circumference.
In the given figure, ABCD is a rectangle inscribed in a circle having length 8 cm and breadth 6 cm. If π = 3.14, then the area of the shaded region is:

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 ____________.
