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
Advertisements
उत्तर
Formula used to find the circumference of a circle is 2πr units
APPEARS IN
संबंधित प्रश्न
In Figure , two concentric circles with centre O, have radii 21cm and 42 cm. If ∠ AOB = 60°, find the area of the shaded region. [use π=22/7]

A sector is cut from a circle of radius 21 cm. The angle of the sector is 150º. Find the length of its arc and area.
The outer circumference of a circular race track is 528m. The track is everywhere 14m
wide. Calculate the cost of leveling the track at rate of 50 paise per square metre.
If the perimeter of a square is equal to the circumference of a circle then the ratio of their areas is
Find the diameter of the sphere for the following :
Volume = `523 17/21` cm3
The cost of fencing a circular field at the rate of ₹ 240 per meter is ₹ 52,800. The field is to be ploughed at the rate of ₹ 12.50 per m2. Find the cost of pouching the field.
Find the dimensions of a rectangular park whose perimeter is 60 m and area 200 m2.
Complete the table below.
| Radius (r) | Diameter (d) | Circumference (c) |
| ...... | ...... | 616 cm |
The sum of the circumference and diameter of a circle is 176 cm. Find the area of the circle.
The area of a circle whose circumference is 22 cm, is ____________.
