Advertisements
Advertisements
प्रश्न
Complete the table below.
| Radius (r) | Diameter (d) | Circumference (c) |
| 7 cm | ...... | ...... |
Advertisements
उत्तर
| Radius (r) | Diameter (d) | Circumference (c) |
| 7 cm | 14 cm | 44 cm |
Explanation:
Radius, r = 7 cm
Diameter, d = 2r
= 2 × 7
= 14 cm
∴ Circumference, c = πd
= `22/7xx14`
= 22 × 2
= 44 cm
संबंधित प्रश्न
In Fig. there are shown sectors of two concentric circles of radii 7 cm and 3.5 cm. Find the area of the shaded region. Use π = `(\frac { 22 }{ 7 }).`
Four cows are tethered at four corners of a square plot of side 50m, so that’ they just cant reach one another. What area will be left ungrazed.
A wire when bent in the form of an equilateral triangle encloses an area of `121sqrt(3) "cm"^2`. The same wire is bent to form a circle. Find the area enclosed by the circle.
The wheels of a car make 2500 revolutions in covering a distance of 4.95 km. Find the diameter of a wheel.
The perimeter of a sector of a circle of radius 5.6 cm is 27.2 cm. Find the area of the sector.
Find the area and perimeter of the circle with the following :
Diameter = 77 cm
The radius of two circles are 20 cm and 13 cm. Find the difference between their circumferences. (Take π =`22/7`)
The diameter of a wheel is 1.4m. How many revolutions does make in moving a distance of 2.2km?
The cost of fencing a circular race course at the rate of ₹ 8 per metre is ₹ 2112. Find the diameter of the race course
The circumferences of two circles are in the ratio 4 : 5. What is the ratio of their radii?
