Advertisements
Advertisements
Question
Complete the table below.
| Radius (r) | Diameter (d) | Circumference (c) |
| 7 cm | ______ | _______ |
Solution
Radius, r = 7 cm
Diameter, d = 2r
= 2 × 7
= 14 cm
∴ Circumference, c = πd
= `22/7xx14`
= 22 × 2
= 44 cm
| Radius (r) | Diameter (d) | Circumference (c) |
| 7 cm | 14 cm | 44 cm |
RELATED QUESTIONS
An elastic belt is placed around the rim of a pulley of radius 5 cm. (Fig. 10) From one point C on the belt, the elastic belt is pulled directly away from the centre O of the pulley until it is at P, 10 cm from the point O. Find the length of the belt that is still in contact with the pulley. Also find the shaded area (use π = 3.14 and `sqrt3=1.73)`
The circumference of a circle exceeds the diameter by 16.8 cm. Find the radius of the circle.
A bicycle whell makes 5000 revolutions in moving 11 km. Find the diameter of the wheel
Find the radius of a circle whose perimeter and area are numerically equal.
In the given figure, ABCD is a square of side 4 cm. A quadrant of a circle of radius 1 cm is drawn at each vertex of the square and a circle of diameter 2 cm is also drawn. Find the area of the shaded region. [π = 3.14]
The radius of a circular garden is 100 m. There is a road 10 m wide, running all around it. Find the area of the road and the cost of levelling it at Rs 20 per m2. [Use π = 3.14]
If the sum of the circumferences of two circles with radii R1 and R2 is equal to the circumference of a circle of radius R, then ______.
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 radii of the two circles are 19 cm and 9 cm respectively. The radius of the circle which has a circumference equal to the sum of the circumference of two circles is ____________.
Circumference of a circle disc is 88 cm. Its radius is ______.
