Advertisements
Advertisements
प्रश्न
Circumference of a circle is always ______.
पर्याय
more than three times of its diameter
three times of its diameter
less than three times of its diameter
three times of its radius
Advertisements
उत्तर
Circumference of a circle is always more than three times of its diameter.
Explanation:
We know that,
Circumference of a circle = 2πr
∴ Circumference = 2 × 3.14 × r ...[∵ π = 3.14]
⇒ Circumference = 3.14 × d ...[∵ d = 2r]
So, circumference of circle is always more than three times of its diameter.
संबंधित प्रश्न
In the figure given below, PQRS is square lawn with side PQ = 42 metres. Two circular flower beds are there on the sides PS and QR with centre at O, the intersections of its
diagonals. Find the total area of the two flower beds (shaded parts).

The sum of the radii of two circles is 140 cm and the difference of their circumferences in 88 cm. Find the diameters of the circles.
An arc of length 20𝜋 cm subtends an angle of 144° at centre of circle. Find the radius of the circle.
Find the angle subtended at the centre of circle of radius ‘a’ cm by an arc of length
`(api)/4` 𝑐𝑚
Find the area of a right – angled triangle, the radius of whose, circumference measures 8 cm and the altitude drawn to the hypotenuse measures 6 cm.
Three equal circles, each of radius 6 cm, touch one another as shown in the figure. Find the area of enclosed between them.

In a circle of radius 14 cm, an arc subtends an angle of 120° at the centre. If `sqrt(3) = 1.73` then the area of the segment of the circle is
Find the area of the circle if its circumfence is 88 cm.
The speed of the car is 66 km/hour. If each wheel of the car is 140 cm in diameter, find the number of revolutions made by each wheel per minute.
Find the volume and the surface area of the spheres in the following :
Diameter= 6.3 cm
Sum of the areas of two squares is 157 m2. If the sum of their perimeters is 68 m, find the sides of the two squares.
Find the dimensions of a rectangular park whose perimeter is 60 m and area 200 m2.
The diameter of a circular field is 56 m. Find its circumference and cost of fencing it at the rate of ₹80 per m. (Take π =`22/7`)
The diameter of a cycle wheel is `4(5)/(11)"cm"`. How many revolutions will it make in moving 6.3km?
Is it true that the distance travelled by a circular wheel of diameter d cm in one revolution is 2 π d cm? Why?
The numerical value of the area of a circle is greater than the numerical value of its circumference. Is this statement true? Why?
Find the radius of a circle whose circumference is equal to the sum of the circumferences of two circles of radii 15 cm and 18 cm.
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.
Circumference of a circle of diameter 5 cm is ______.
