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, 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
Two tangents TP and TQ are drawn to a circle with centre O from an external point T. Prove that ∠PTQ = 2∠OPQ.

A quadrilateral ABCD is drawn to circumscribe a circle. Prove that AB + CD = AD + BC ?
In the given figure, O is the centre of the circle and ∠DAB = 50° . Calculate the values of xand y.

In Fig. 8.79, PQ is a tangent from an external point P to a circle with centre O and OP cuts the circle at T and QOR is a diameter. If ∠POR = 130° and S is a point on the circle, find ∠1 + ∠2.

Use the figure given below to fill in the blank:
If the length of RS is 5 cm, the length of PQ = _______

Draw a line AB = 8.4 cm. Now draw a circle with AB as diameter. Mark a point C on the circumference of the circle. Measure angle ACB.
In a circle with centre P, chord AB is parallel to a tangent and intersects the radius drawn from the point of contact to its midpoint. If AB = `16sqrt(3)`, then find the radius of the circle.
A quadrilateral ABCD is inscribed in a circle such that AB is a diameter and ∠ADC = 130º. Find ∠BAC.
What is the name for the perimeter of a circle?
