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 area of a rectangular plot is 462 m2 and its length is 28 m. Find its perimeter.
From a circular piece of cardboard of radius 3 cm two sectors of 900 have been cutoff . Find the perimeter of the remaining portion nearest hundredth centimeters ( `"Take" pi = 22/ 7`).
In the following figure, AB = 36 cm and M is mid-point of AB. Semi-circles are drawn on AB, AM and MB as diameters. A circle with centre C touches all the three circles. Find the area of the shaded region.

If the area of a square is same as the area of a circle, then the ratio of their perimeters, in terms of π, is
The radii of two circles are 8 cm and 6 cm. Find the radius of the circle having area equal to the sum of the areas of the two circles.
In the given figure, PQ = 24 cm, PR = 7 cm and O is the centre of the circle. Find the area of the shaded region. [Take π = 3.14.]

The areas of two concentric circles are 1386 cm2 and 962.5 cm2. The width of the ring is ______.
Find the radius and area of a circle, whose circumference is :
(i) 132 cm
(ii) 22 m
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.
A table top is semicircular in shape with diameter 2.8 m. Area of this table top is ______.
