Q11 of 36 Page 253

Select a proper option (a), (b), (c) or (d) from given options and write in the box given on the right so that the statement becomes correct:

The length of an arc subtending an angle of measure 60 at the centre of a circle whose area is 616 is ……….


Area of circle = 616cm2


πr2 = 616


r2 = 196


r = 14 cm


Given θ = 60o


area of the minor sector =


=


=


= cm2


So, option(c) is the correct answer.

More from this chapter

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11

Select a proper option (a), (b), (c) or (d) from given options and write in the box given on the right so that the statement becomes correct:

A sector subtends an angle of measure 120 at the centre of a circle having radius of 21 cm. The area of the sector is ……….. cm2.


 11

Select a proper option (a), (b), (c) or (d) from given options and write in the box given on the right so that the statement becomes correct:

If the area and the circumference of a circle are numerically equal, then r = …………


 11

Select a proper option (a), (b), (c) or (d) from given options and write in the box given on the right so that the statement becomes correct:

The area of a minor sector of (O, 15) is 150. The length of the corresponding arc is (π = 3.14)


 11

Select a proper option (a), (b), (c) or (d) from given options and write in the box given on the right so that the statement becomes correct:

If the radius of a circle is increased by 10 %, then corresponding increase in the area of the circle is ………. (π = 3.14)