Advertisements
Advertisements
प्रश्न
Formula used to find the circumference of a circle is
पर्याय
2πr units
πr2 + 2r units
πr2 sq.units
πr3 cu.units
उत्तर
Formula used to find the circumference of a circle is 2πr units
APPEARS IN
संबंधित प्रश्न
A wire is looped in the form of a circle of radius 28 cm. It is re-bent into a square form. Determine the length of the side of the square.
An elastic belt is placed round the rim of a pulley of radius 5 cm. One point on the belt is pulled directly away from the centre O of the pulley until it is at P, 10 cm from O. Find the length
of the belt that is in contact with the rim of the pulley. Also, find the shaded area.
The minute hand of a clock is √21 𝑐𝑚 long. Find area described by the minute hand on the face of clock between 7 am and 7:05 am
The areas of two circles are in the ratio 4: 9. What is the ratio between their circumferences?
In a circle of radius 10.5 cm, the minor arc is one-fifth of the major arc. Find the area of the sector corresponding to the major arc.
PQRS is a diameter of a circle of radius 6 cm. The lengths PQ, QR and RS are equal. Semicircles are drawn with PQ and QS as diameters, as shown in the given figure. If PS = 12 cm, find the perimeter and area of the shaded region.
The area of a square is the same as the area of a square. Their perimeters are in the ratio
Complete the table below.
| Radius (r) | Diameter (d) | Circumference (c) |
| ...... | ...... | 616 cm |
Diameters of different circles are given below. Find their circumference (Take π = `22/7`)
d = 28 mm
Find the circumference of the circles whose radii are given below.
91 mm
