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There are two circles intersecting each other. Another smaller circle with centre O, is lying between the common region of two larger circles. Centre of the circle (i.e., A, O and B) are lying on a straight line. AB = 16 cm and the radii of the larger circles are 10 cm each. What is the area of the smaller circle?
ABCD is a square, inside which 4 circles with radius 1 cm, each are touching each other. What is the area of the shaded region?
Three circles of equal radii touch each other as shown in figure. The radius of each circle is 1 cm. What is the area of shaded region?
The area of a circle is 38.5 sq. cm. Its circumference is
The circumference of a circle whose diameter is 4.2cm is
The length of the wire is 66m. The number of circles of circumference 13.2cm can be made from the wire is
The number of rounds that a wheel of diameter 7/11 m will make in going 4 km is
The circumference of a circle exceeds its diameter by 120cm, then its radius is
The area of a square inscribed in a circle of diameter ‘d’ is
The distance covered by a circular wheel of diameter ‘d’ in 100 revolutions is
The radius of the circle whose area is equal to the sum of the areas of the two circles of radii 24cm and 7cm is
The radius of the circle whose circumference is equal to the sum of the circumferences of the two circles of radii 24cm and 7cm is
The perimeter of a semicircular protractor whose radius is 7cm is
If the radius of the circle is cm, then its area is
The area of a circle is 2464 sq. cm, then its diameter is given by
If ‘r’ is the radius of a circle, then its perimeter is given by
The area of the square that can be inscribed in a circle of radius 12cm is
The area of the circle that can be inscribed in a square of side 10cm is
If the perimeter of a circle is equal to that of a square, then the ratio of their areas is
The radius of a circle whose circumference is equal to the sum of the circumferences of the two circles of diameters 36cm and 20cm is
If the sum of the circumferences of two circles with radii R_{1}and R_{2} is equal to the circumference of a circle of radius R, then
If the circumference of a circle and the perimeter of a square are equal, then
The diameter of a circular park is 17.5 m. It is surrounded by a path of width 3.5 m. The area of the path is given by
The radii of two concentric circles are 19cm and 16cm. The area of the ring enclosed between them is
If the difference between the circumference and radius of a circle is 37 m, then the circumference of the circle is given by
517 tests

517 tests
