Advertisements
Advertisements
Question
In the formula, C = 2πr, ‘r’ refers to
Options
circumference
area
rotation
radius
Advertisements
Solution
In the formula, C = 2πr, ‘r’ refers to radius
APPEARS IN
RELATED QUESTIONS
In Fig. 4, ABCD is a square of side 14 cm. Semi-circles are drawn with each side of square as diameter. Find the area of the shaded region.
(use `pi=22/7`)
An elastic belt is placed round the rim of a pulley of radius 5 cm. One point on the belt is pulled directly away from the centre O of the pulley until it is at P, 10 cm from O. Find the length
of the belt that is in contact with the rim of the pulley. Also, find the shaded area.
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.
A road which is 7m wide surrounds a circular park whose circumference is 352m. Find the area of road.
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.
The area of a circle is 38.5 cm2. The circumference of the circle is ______.
Find the area grazed by a horse tied with a 11. 2 m rope to a corner of a field measuring 25m by 15 m.
A solid sphere metal is cut through its centre into 2 equal parts. If the diameter of the sphere is 3`1/3` cm , find the total surface of each part, correct to two decimal places.
The radii of two circles are 25 cm and 18 cm. Find the radius of the circle which has a circumference equal to the sum of circumferences of these two circles.
The radius of a circle is 21 cm. Find the circumference (Take π = `3 1/7`).
