Area related to circle

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• D

If the circumference of a circle and the perimeter of a square are equal, then

(A) Area of the circle = Area of the square

(B) Area of the circle > Area of the square

(C) Area of the circle < Area of the square

(D) Nothing definite can be said about the relation between the areas of the circle and square

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The radius of a circle whose circumference is equal to the sum of the circumferences of the two circles of diameters 36cm and 20 cm is

(A) 56 cm (B) 42 cm (C) 28 cm (D) 16 cm

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• D

• A

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• D

A bicycle wheel makes 5000 revolutions in moving 11 km. Find the

diameter of the wheel. (in cm)

The minute hand ofa clock is 12 cm long. Find the area ofthe face of

the clock described by the minute hand in 35 minutes.(in cm²)

Onincreasing the diameter of a circle by 40%, its area will be increased by

(a) 40%

(b) 80%

(c) 96%

(d) 82%

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• D

• A

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• D

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• D