A wheel makes 1000 revolutions in covering a distance of 88 km. Then, the diameter of the wheel is.
14 cm
24 m
28 m
40 m
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
A chord of a circle of radius 14 cm subtends 60o at the centre. Then, the area of the major sector is.
510 cm2
511 cm2
512 cm2
513 cm2
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
If the diameter of a semicircular protractor is 14 cm, then its perimeter is.
34 cm
35 cm
36 cm
37 cm
The difference between the circumference and radius of a circle is 37cm. Then area of the circle is.
111 cm2
184cm2
154cm2
259cm2
A wheel has diameter 84cm. Find how many complete revolution must it make to cover 792 meters.
100
200
300
400
If the diameter of a semi circular plot is 14m, then find its perimeter.
36m
28m
7m
4m
The area enclosed between two concentric circles is 770 cm2. If radius of the outer circle is 21 cm, find the radius of the inner circle.
10 cm
12 cm
16 cm
If the circumference of a circle is 66 cm, then the area of the circle is.
132 cm2
462 cm2
173.25 cm2
346.5 cm2