MEDIUM
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The area of a circle with radius of 7 cm is

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Important Questions on Area

EASY

If the length of a side of the square is equal to that of the diameter of a circle, then the ratio of the area of the square and that of the circle is:

π=227

EASY
A racetrack is in the shape of a ring whose inner and outer circumferences are 440m and 506m respectively. What is the cost of levelling te track at Rs.6/m2(takeπ=227)
EASY
Find the area and circumference of a circle if the radius is 14 cm.(Take π=227)
EASY
The number of whole metallic tiles that can be produced by melting and recasting a circula metallic plate, if each of the tiles has a shape of a right-angled isosceles triangle and the circular plate has a radius equal in length to the longest side of the tile (Assume that the tile and plate are of uniform thickness, and there is no loss of material in the melting and recasting process) is
EASY
Write the area of a semicircle of radius r=7 cm.
MEDIUM
A wheel has a radius of 28 cm. How many revolutions will it make to travel 704 m ? Use: π=227
MEDIUM
The inner and outer radius of a circular track are, respectively, 29 m and 23 m. The cost of levelling the track at 7/m2 is: 
EASY
A solid sphere of6 cm diameter is melted and recast into 8 solid spheres of equal volume. The radius (in cm ) of each small sphere is
EASY
The area of a semicircle is 77cm2. Calculate its perimeter in cm.
EASY

A wire when bent in the form of a square encloses an area of 484 sq. cm. If the same wire is bent in the form of a circle, what is the area enclosed by it?

EASY
The circumference of a circle is aπ units and the area of the circle is bπ square units. If a:b is equal to 4:5, then the radius of the circle is:
MEDIUM
The cost of fencing a circular field at the rate of 24 per metre is 5280. The field is to be ploughed at the rate of 0.50 per m2. If the cost of ploughing the field is k, find k. (Use π=227)
EASY
If the perimeter of a circle is 88 cm, then what is the area of the circle?
EASY

A spherical ball of diameter 35 cm rolls 20 times. How much is the distance (in m) covered by it?

(Take π=227)

EASY
A square has the perimeter equal to the circumference of a circle having radius 7 cm. What is the ratio of the area of the circle to area of the square?
EASY
If the perimeter of a circle and a square are equal, then what is the ratio of the area of the circle to that of the square ?
EASY
A copper rod of1 cm diameter and8 cmlength is drawn into a wire of uniform diameter and18 m length. The radius (in ) of wire is
MEDIUM
The circumference of a circle A is 75 m more than its diameter. If the radius of circle B is 3.5 m more than the radius of circle A, what is the circumference of circle B?
EASY
Write the area of circle of radius r.
MEDIUM

Find the area in square centimeter of the shaded region in the given figure, where ABCD is a square of side 14 cm. [Take π=227]

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