Important MCQs | Class 10th Areas Related to Circles | Ch 12 Maths | Term-1 MCQs | Part-2 | Focus Classes

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Important MCQs | Class 10th Areas Related to Circles |  Ch 12 Maths |  Term-1 MCQs | Part-2

1. An arc of a circle is of 5 pie cm and the sector it bounds has the area 20 pie cm2, then the radius of the circle be-
(a) 4 cm
(b) 8 cm
(c) 12 cm
(d) 16 cm

2. In the given fig. ABC is an equilateral triangle inscribed in a circle with radius 54 cm, find the length of its altitude.

3. The wheel of a motor cycle is of radius 35 cm. How many revolutions per minute must the wheel make so as to keep a speed of 66 km/h?

(A) 300
(B) 400
(C) 450
(D) 500

4. If the perimeter of a circle is equal to that of a square, then the ratio of their areas is:

(A) 22:7
(B) 14:11
(C) 7:22
(D) 11:14

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