Advertisements
Advertisements
प्रश्न
Draw circle with diameter: 6 cm
In above case, measure the length of the radius of the circle drawn.
Advertisements
उत्तर
AB is the diameter of circle
i.e. AB = 6 cm
and OA is the radius of circle
`= 1/2 "of diameter" = 6/2 = 3` cm
i.e., OA = OB = 3 cm.
APPEARS IN
संबंधित प्रश्न
In Fig. 1, PA and PB are tangents to the circle with centre O such that ∠APB = 50°. Write the measure of ∠OAB.
From a point T outside a circle of centre O, tangents TP and TQ are drawn to the circle. Prove that OT is the right bisector of line segment PQ.
In the given figure, tangents PQ and PR are drawn from an external point P to a circle with centre O, such that ∠RPQ = 30°. A chord RS is drawn parallel to the tangent PQ. Find ∠RQS.
In fig common tangents PQ and RS to two circles intersect at A. Prove that PQ = RS.
Prove that the line segment joining the points of contact of two parallel tangents of a circle, passes through its centre.
Radius of a circle with centre O is 4 cm. If l(OP) = 4.2 cm, say where point P will lie.
In the following figure, OABC is a square. A circle is drawn with O as centre which meets OC at P and OA at Q.
Prove that:
( i ) ΔOPA ≅ ΔOQC
( ii ) ΔBPC ≅ ΔBQA
In an equilateral triangle, prove that the centroid and center of the circum-circle (circumcentre) coincide.
Construct a triangle PQR with QR = 5.5 cm, ∠Q = 60° and angle R = 45°. Construct the circumcircle cif the triangle PQR.
If d1, d2 (d2 > d1) be the diameters of two concentric circles and c be the length of a chord of a circle which is tangent to the other circle, then ______
