Advertisements
Advertisements
प्रश्न
Ratio of the circumference of a circle to its diameter is denoted by symbol ______.
Advertisements
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
The minute hand of a clock is 10cm long. Find the area of the face of the clock described by the minute hand between 9 A.M. and 9.35 A.M.
In circle of radius 6cm, chord of length 10 cm makes an angle of 110° at the centre of circle find Length of arc
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 square ABCD is inscribed in a circle of radius r. Find the area of the square.
The area of an equilateral triangle is `49sqrt(3)` cm2 . Taking each angular point as centre, circles are drawn with radius equal to half the length of the side of the triangle. Find the area of the triangle not included in the circles. [Take π = 1.73]
Find the area of the circle if its circumfence is 88 cm.
The wheel of a car makes 10 revolutions per second. If its diameter is 70cm, find the speed of the car in km per hr.
The radius of a circular plot is 7.7 metres. How much will it cost to fence the plot with 3 rounds of wire at the rate of 50 rupees per metre?
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.
A circle with radius 16 cm is cut into four equal parts and rearranged to form another shape as shown in the following figure:

Does the perimeter change? If it does change, by how much does it increase or decrease?
