Advertisements
Advertisements
प्रश्न
Circumference ‘C’ of a circle is equal to 2π × ______.
Advertisements
उत्तर
Circumference ‘C’ of a circle is equal to 2π × r.
Explanation:
Circumference of a circle = 2π × r
APPEARS IN
संबंधित प्रश्न
A doorway is decorated as shown in the figure. There are four semi-circles. BC, the diameter of the larger semi-circle is of length 84 cm. Centres of the three equal semicircles lie on BC. ABC is an isosceles triangle with AB = AC. If BO = OC, find the area of the shaded region. (Take `pi = 22/7`)
Two circular pieces of equal radii and maximum area, touching each other are cut out from a rectangular cardboard of dimensions 14 cm ⨯ 7 cm. Find the area of the remaining cardboard.
In the given figure, ABCD is a square of side 4 cm. A quadrant of a circle of radius 1 cm is drawn at each vertex of the square and a circle of diameter 2 cm is also drawn. Find the area of the shaded region. [π = 3.14]
A square ABCD is inscribed in a circle of radius r. Find the area of the square.
A horse is placed for grazing inside a rectangular field 70 m by 52 m. It is tethered to one corner by a rope 21 m long. On how much area can it graze? How much area is left ungrazed?
The side of a square is 10 cm. Find the area of the inscribed circle [π = 3.14]
Find the volume and the surface area of the spheres in the following :
Radius= 2.1 cm
Complete the table below.
| Radius (r) | Diameter (d) | Circumference (c) |
| 7 cm | ...... | ...... |
The wheel of a bullock cart has a diameter of 1.4 m. How many rotations will the wheel complete as the cart travels 1.1 km?
Is it true that the distance travelled by a circular wheel of diameter d cm in one revolution is 2 π d cm? Why?
