Advertisements
Advertisements
Question
Find the radius of the circle
Diameter = 24 cm
Advertisements
Solution
Diameter = 24 cm
Radius = `"diameter"/2`
= `24/2`
= 12 cm
APPEARS IN
RELATED QUESTIONS
In Fig. 1, QR is a common tangent to the given circles, touching externally at the point T. The tangent at T meets QR at P. If PT = 3.8 cm, then the length of QR (in cm) is :

(A) 3.8
(B) 7.6
(C) 5.7
(D) 1.9
From a point P, 10 cm away from the centre of a circle, a tangent PT of length 8 cm is drawn. Find the radius of the circle.
Prove that the tangents at the extremities of any chord make equal angles with the chord.
Write True or False. Give reason for your answer.
Line segment joining the centre to any point on the circle is a radius of the circle.
Fill in the blank
The angle between tangent at a point on a circle and the radius through the point is ........
In the given figure, two tangents RQ and RP are drawn from an external point R to the circle with centre O. If ∠PRQ = 120°, then prove that OR = PR + RQ.

If a number of circles pass through the endpoints P and Q of a line segment PQ, then their centres lie on the perpendicular bisector of PQ.
If a line segment joining mid-points of two chords of a circle passes through the centre of the circle, prove that the two chords are parallel.
The circumcentre of the triangle ABC is O. Prove that ∠OBC + ∠BAC = 90º.
Say true or false:
The centre of a circle is always in its interior.
