Two circles touch externally, if the distance between their centres is equal to the ____ of their radii.

Correct! Wrong!

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Two circles touch externally, if the distance between their centres is equal to the sum of their radii.

If the angles subtended by chords of a circle at the centre are equal, then the chords are equal.

Correct! Wrong!

If the angles subtended by chords of a circle at the centre are equal, then the chords are equal.

The diameter of a semi-circular window is 63 cm. Its perimeter = ____.

Correct! Wrong!

Perimeter of window = πr + 2r = 22 /7 × 63 /2 + 63 = 99 + 63 = 162 cm Hence, the perimeter of the window is 162 cm.

If two circles of radii 4 cm and 7 cm touch internally, then the distance between their centres is ____.

Correct! Wrong!

Distance between the centres of the circles = Difference of their radii =7−4 =3 cm

The angle subtended by an arc of a circle at the centre is ____ the angle subtended by the same arc at any point on the remaining part of the circle.

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The angle subtended by an arc of a circle at the centre is double the angle subtended by the same arc at any point on the remaining part of the circle.

Segment of a circle is the region between an arc and chord of the circle.

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Segment of a circle is the region between an arc and chord of the circle

The perpendicular bisectors of two chords of a circle meet at its centre.

Correct! Wrong!

The perpendicular bisectors of two chords of a circle meet at its centre.

The area of a sector of a circle of radius 5 cm formed by an arc of length 3.5 cm is____.

Correct! Wrong!

Area of the sector = 1 /2 × l × r = 1 /2 × 3.5 × 5 = 8.75 cm2

When two circles touch internally the distance between their centers is equal to ____.

Correct! Wrong!

When two circles touch each other internally, the distance between the centres is equal to the difference between their radii.

If two chords of a circle are equal, then their corresponding arcs are congruent.

Correct! Wrong!

If two chords of a circle are equal, then their corresponding arcs are congruent.

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CBSE Class 9th Math 10 - Circles MCQs
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