Advertisements
Advertisements
प्रश्न
Ratio of circumference of a circle to its radius is always 2π : 1.
विकल्प
True
False
Advertisements
उत्तर
This statement is True.
Explanation:
∵ Circumference : Radius = 2πr : r = 2π : 1
APPEARS IN
संबंधित प्रश्न
Find the angle subtended at the centre of circle of radius 5cm by an arc of length `((5pi)/3)` cm
The outer circumference of a circular race track is 528m. The track is everywhere 14m
wide. Calculate the cost of leveling the track at rate of 50 paise per square metre.
In the given figure, the shape of the top of a table is that of a sector of a circle with centre O and ∠AOB = 90°. If AO = OB = 42 cm,· then find the perimeter of the top of the table.

Find the area and perimeter of the circle with the following :
Diameter = 77 cm
A hollow metallic cylindrical tube has an internal radius of 3.5 cm and height 21 cm. The thickness of the metal tube is 0.5 cm. The tube is melted and cast into a right circular cone of height 7 cm. Find the radius of the cone, correct to one decimal place.
The radius of a circle is 21 cm. Find the circumference (Take π = `3 1/7`).
The circumferences of two circles are in the ratio 5: 7, find the ratio between their radius.
If the circumference of a circle is 176 cm, find its radius.
In reference to a circle the value of π is equal to ______.
Circumference of a circle disc is 88 cm. Its radius is ______.
