Advertisements
Advertisements
प्रश्न
Find the circumferences of a circle whose radius is 7 cm.
Advertisements
उत्तर
Radius of the circle, r = 7 cm
∴ Circumference of the circle =
APPEARS IN
संबंधित प्रश्न
How many times a wheel of radius 28 cm must rotate to go 352 m? (Take `pi = 22/7`)
A horse is tied to a pole with 28m long string. Find the area where the horse can graze.
In circle of radius 6cm, chord of length 10 cm makes an angle of 110° at the centre of circle find Area of the circle
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.
In the given figure, O is the centre of the sector. \[\angle\]ROQ = \[\angle\]MON = 60° . OR = 7 cm, and OM = 21 cm. Find the lengths of arc RXQ and arc MYN. (\[\pi = \frac{22}{7}\])
A wire when bent in the form of an equilateral triangle encloses an area of `121sqrt(3)` cm2. The same wire is bent to form a circle. Find the area enclosed by the circle.
Three equal circles, each of radius 6 cm, touch one another as shown in the figure. Find the area of enclosed between them. [Take π = 3.14 and `sqrt(3) = 1.73`.]
In a circle of radius 21 cm, an arc subtends an angle of 60° at the centre. The length of the arc is ______.
A circus tent is cylindrical to a height of 5 m and conical above it. If its diameter is 42 m and slant height of the cone is 53 m, calculate the total area of the canvas required.
A cylindrical beaker of 7 cm diameter is partly filled with water. Determine the number of spherical marbles of diameter 1.4 cm that are to be submerged in it to raise the water level by 5.6 cm
Find the radius of the circle whose circumference is equal to the sum of the circumferences of the circles having radius 15 cm and 8 cm.
The circumference of a circle is eigth time the circumference of the circle with a radius of 12 cm. Find its diameter.
A circular racing track has inner circumference 528 m and outer circumference 616 m. Find the width of the track.
Find the area and perimeter of the circles with following: Diameter = 77cm
Sudhanshu divides a circular disc of radius 7 cm in two equal parts. What is the perimeter of each semicircular shape disc? (Use π = `22/7`)
Diameters of different circles are given below. Find their circumference (Take π = `22/7`)
d = 28 mm
The cost of decorating the circumference of a circular lawn of a house at the rate of ₹ 55 per metre is ₹ 16940. What is the radius of the lawn?
The diameter of a wheel is 1.26 m. The distance traveled in 500 revolutions is ____________.
A circular pond is 17.5 m is of diameter. It is surrounded by a 2 m wide path. Find the cost of constructing the path at the rate of Rs 25 per m2.
