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
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
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
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
A chord of a circle of radius 14cm subtends a right angle at the centre. Then, the area of the minor sector is.
154 cm2
156 cm2
158 cm2
160 cm2
A blacksmith Rajesh bent a steel wire in the form of a square, encloses an area of 121 sq.cm. The same wire he bent in the form of a circle. Find the area of the circle.
150 cm2
152.5 cm2
153 cm2
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
If the perimeter and area of a circle are numerically equal, then the radius of the circle is.
2 unit
π units
7 units
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
