Advertisements
Advertisements
Question
Complete the table below.
| Radius (r) | Diameter (d) | Circumference (c) |
| ...... | 28 cm | ...... |
Advertisements
Solution
| Radius (r) | Diameter (d) | Circumference (c) |
| 14 cm | 28 cm | 88 cm |
Explanation:
Diameter (d) = 28 cm
Radius (r) = `d/2 = 28/2` = 14 cm
Circumference (c) = πd
= `22/7 xx 28`
= 88 cm
RELATED QUESTIONS
In Fig. 3, APB and AQO are semicircles, and AO = OB. If the perimeter of the figure is 40 cm, find the area of the shaded region [Use `pi=22/7`]
A sheet of paper is in the form of rectangle ABCD in which AB = 40cm and AD = 28 cm. A semicircular portion with BC as diameter is cut off. Find the area of remaining paper.
Find in terms of x the length of the arc that subtends an angle of 30°, at the centre of circle of radius 4 cm.
The area of a square is the same as the area of a square. Their perimeters are in the ratio
Find the area and perimeter of the following semi-circle :
Radius= 1.4 cm
The diameter of a circle is 28 cm.
Find its :
(i) Circumference
(ii) Area.
Using a ruler and compasses only:
(i) Construct a triangle ABC with the following data: AB = 3.5 cm, BC = 6 cm and ∠ ABC = 120°.
(ii) In the same diagram, draw a circle with BC as diameter. Find a point P on the circumference of the circle which is equidistant from AB and BC.
(iii) Measure ∠ BCP.
The circumference of a circle is numerically equal to its area. Find the area and circumference of the circle.
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?
