Advertisements
Advertisements
प्रश्न
In reference to a circle the value of π is equal to ______.
पर्याय
`"area"/"circumference"`
`"area"/"diameter"`
`"circumference"/"diameter"`
`"circumference"/"radius"`
Advertisements
उत्तर
In reference to a circle the value of π is equal to `underlinebb("Circumference"/"Diameter")`.
Explanation:
We know that,
Circumference of a circle = 2πr
Circumference = π × Diameter ...[∵ Diameter = 2r]
⇒ π = `"Circumference"/"Diameter"`
APPEARS IN
संबंधित प्रश्न
The circumference of a circle exceeds the diameter by 16.8 cm. Find the radius of the circle.
The circumference of a circle exceeds diameter by 16.8 cm. Find the circumference of
circle.
A field is in the form of circle. A fence is to be erected around the field. The cost of fencing would to Rs. 2640 at rate of Rs.12 per metre. Then the field is to be thoroughs ploughed at cost of Rs. 0.50 per m2. What is amount required to plough the field?
In the given figure, if A(P-ABC) = 154 cm2 radius of the circle is 14 cm, find
(1) `∠APC`
(2) l ( arc ABC) .

The area between the circumferences of two concentric circles is 2464 cm2. If the inner circle has circumference of 132 cm, calculate the radius of outer circle.
The shaded portion of the figure, given alongside, shows two concentric circles. If the circumference of the two circles is 396 cm and 374 cm, find the area of the shaded portion.
The speed of a car is 66km per hour. If each wheel of the car is 140cm in diameter, find the number if revolution made by each wheel per minute.
The circumference o a garden roller is 280cm. How many revolutions does it make in moving 490m?
A 4.2m wide road surrounds a circular plot whose circumference is 176m. Find the cost of paving the road at Rs.75per m2.
A ground is in the form of a circle whose diameter is 350 m. An athlete makes 4 revolutions. Find the distance covered by the athlete
