MEDIUM
10th CBSE
IMPORTANT
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The radius of a circle is 20 cm. It is divided into four parts of equal area by drawing three concentric circles inside it. Then, the radius of the largest of three concentric circles drawn is

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Important Questions on Areas Related to Circles

MEDIUM
10th CBSE
IMPORTANT
The area of a sector whose perimeter is four times its radius r units is
MEDIUM
10th CBSE
IMPORTANT
If a chord of a circle of radius 28 cm makes an angle of 90° at the centre, then the area of the major segment is
MEDIUM
10th CBSE
IMPORTANT
If area of a circle inscribed in an equilateral triangle is 48π square units, then perimeter of the triangle is
MEDIUM
10th CBSE
IMPORTANT
The hour hand of a clock is 6 cm long. The area swept by it between 11 .20 am and 11.55 am is 
HARD
10th CBSE
IMPORTANT
ABCD is a square of side 4 cm. If E is a point in the interior of the square such that CED is equilateral, then area of ACE is.
MEDIUM
10th CBSE
IMPORTANT
If the area of circle is equal to the sum of the areas of two circles of diameters 10 cm and 24 cm, then diameter of the large circle (in cm) is
EASY
10th CBSE
IMPORTANT
If π is taken as 227, the distance (in metres) covered by a wheel of diameter 35 cm, in one revolution, is 
MEDIUM
10th CBSE
IMPORTANT

ABCD is a rectangle whose three vertices are B (4,0), C (4, 3) and D(0, 3). The length of one of its diagonals is