Advertisements
Advertisements
प्रश्न
Ratio of the circumference of a circle to its diameter is denoted by symbol ______.
उत्तर
Ratio of the circumference of a circle to its diameter is denoted by symbol π.
Explanation:
∵ Circumference = 2 πr
⇒ C = πd ......[∵ d = 2r]
⇒ `C/d` = π
⇒ π = C:d
Hence, π is the answer.
APPEARS IN
संबंधित प्रश्न
A car has wheels which are 80 cm in diameter. How many complete revolutions does each wheel make in 10 minutes when the car is travelling at a speed of 66 km per hour ?
An arc of a circle is of length 5π cm and the sector it bounds has an area of 20 π cm2. Find the radius of the circle.
Choose the correct alternative answer for the following question.
Find the length of the arc of a circle of diameter 42 cm which subtends an angle of 60° at the centre.
In making 1000 revolutions, a wheel covers 88 km. The diameter of the wheel is
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 circumference of the circle whose area is 25 times the area of the circle with radius 7 cm.
A cart wheel makes 9 revolutions per second. If the diameter of the wheel is 42 cm, find its speed in km/hr.
The area between the circumference of two concentric circles is 2464cm2. If the inner circle has a circumference of 132cm, calculate the radius of the outer circle.
The circumferences of two circles are in the ratio 4 : 5. What is the ratio of their radii?