If the diameter of a semicircular protractor is 14 cm, then its perimeter is.
34 cm
35 cm
36 cm
37 cm
A sector is cut from a circle of diameter 21cm. If the angle of the sector is 150o find its area.
140cm2
140.32cm2
144.38cm2
145cm2
The difference between the circumference and radius of a circle is 37cm. Then area of the circle is.
111 cm2
184cm2
154cm2
259cm2
The length of a minor arc is 2/9 of the circumference of the circle. Then the measure of the angle subtended by the arc at the centre of the circle is.
80o
60o
45o
30o
If the perimeter and area of a circle are numerically equal, then find the radius of the circle.
1 unit
2 units
3 units
4 units
The area of a circle is increased by 22cm2, when its radius is increased by 1cm. The original radius of the circle is.
6cm
3.2cm
3cm
3.5cm
If the ratio of the radii of the two wheel is 3:4 then the ratio of their circumference is.
3:4
3:5
3:6
6:3
A wheel has diameter 84cm. Find how many complete revolution must it make to cover 792 meters.
100
200
300
400
Find the area of the ring shaped region enclosed between two concentric circles of radii 20cm and 15cm.
500cm2
550cm2
620cm2
650cm2
A wire made of gold is looped in the form of circular ear ring of radius 2.8 cm. It is rebent into a square.
Determine the length of the side of the square.
4 cm
4.4 cm
4.5 cm
8 cm
