Advertisements
Advertisements
Question
Draw circle with diameter: 6 cm
In above case, measure the length of the radius of the circle drawn.
Solution
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
RELATED QUESTIONS
In Fig. 2, AB is the diameter of a circle with centre O and AT is a tangent. If ∠AOQ = 58°, find ∠ATQ.
In the below fig. O is the centre of the circle. If ∠APB = 50°, find ∠AOB and ∠OAB.
Two circles touch internally. The sum of their areas is 116 π cm2 and the distance between their centres is 6 cm. Find the radii of the circles ?
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.
Radius of a circle with centre O is 4 cm. If l(OP) = 4.2 cm, say where point P will lie.
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.
In figure, chords AC and DE intersect at B. If ∠ABE = 108°, m(arc AE) = 95°, find m(arc DC).
If AOB is a diameter of a circle and C is a point on the circle, then AC2 + BC2 = AB2.
Say true or false:
The centre of a circle is always in its interior.
What is the area of a semi-circle of diameter ‘d’?
