Advertisements
Advertisements
Question
If the radius of a circle is 5 cm, what will its diameter be?
Advertisements
Solution
Diameter = 2 × radius
= 2 × 5
= 10 cm
RELATED QUESTIONS
Prove that the line segment joining the point of contact of two parallel tangents to a circle is a diameter of the circle.
In Fig. 5, the chord AB of the larger of the two concentric circles, with centre O, touches the smaller circle at C. Prove that AC = CB.
If ABCD is a cyclic quadrilateral in which AD || BC (In the given figure). Prove that ∠B = ∠C.
In the given figure, common tangents PQ and RS to two circles intersect at A. Prove that PQ = RS.
In the given figure, PO \[\perp\] QO. The tangents to the circle at P and Q intersect at a point T. Prove that PQ and OTare right bisector of each other.
Draw a circle of radius of 4.2 cm. Mark its center as O. Takes a point A on the circumference of the circle. Join AO and extend it till it meets point B on the circumference of the circle,
(i) Measure the length of AB.
(ii) Assign a special name to AB.
State, if the following statement is true or false:
Every diameter bisects a circle and each part of the circle so obtained is a semi-circle.
In the adjoining figure ‘O’ is the center of the circle, ∠CAO = 25° and ∠CBO = 35°. What is the value of ∠AOB?
In the following figure, if AOB is a diameter and ∠ADC = 120°, then ∠CAB = 30°.
Find the length of the arc of a circle which subtends an angle of 60° at the centre of the circle of radius 42 cm.
