Circles

The circumference of Circle A is twice the circumference of circle B. {:("Quantity A","Quantity B"),("The area of Circle A","Twice the area of Circle B"):}

Find the Area of Circle and circumference of circle

Fill in the blanks: All point lying inside/outside a circle are called ... points/ ... points. Circle having the same centre and different radii are called ... circles. A point whose distance from the centre of a circle is greater than its radius lies in .... of the circle. A continuous piece of a circle is .... of the circle. The longest chord of a circle is a ......of the circle. An arc is a ......... when its ends are the ends of a diameter. Segment of a circle is the region between an arc and ... of the circle. A circle divides the plane, on which it lies, in .... parts.

Fill in the blanks: (i) The diameter of a circle is … times its radius (ii) The diameter of a circle is the … chord of the circle. (iii) The diameter of a circle pass through…. (iv) A chord of a circle is a line segment with its end points on the … (v) If we join any two points on a circle by a line segment, we obtain… (vi) A radius of a circle is a line segment with one end at …. and the other end at…. (vii) All radii of a circle are… (viii) The diameters of circle are… (ix) The total number of diameters of circle is… (x) Every point on a circle is…from its centre.. (xi) A chord of a circle contains exactly….points of the circle.. (xii) A diameter is the longest… (xiii) Concentric circles are circle having….

Circle P has a radius of 7, and Circle R has a diameter of 8. The circumference of Circle P is how much greater than the circumference of Circle R?

Two circles have an external tangent with length 36 cm. The shortest distance between these circles is 14 cm. If the radius of the longer circle is 4 times the radius of the smaller circle then the radius of the larger circle in cms is

In each of the following , state it the statement is true (T) or false (F): (i) Every circle has a centre. (ii) The centre of a circle is a point of the circle. (iii) Any two radii of a circle make up diameter. (iv) Every chord of a circle is parallel to some diameter of the circle. (v) A circle is symmetric about each of its diameter. (vi) The diameter is twice the radius. (vii) A radius is a chord of the circle. (viii) Concentric circles have the same radii. (ix) The nearer a chord to the centre of a circle, the longer is its length.

The arc of a circle subtending a right angle at any point of the circle in its alternate segment is a semi-circle.

The adjoining figure shows two circles with the same centre. The radius of the larger circle is 10 cm and the radius of the smaller circle is 4 cm.Find: (a) the area of the larger circle (b) the area of the smaller circle (c) the shaded area between two circles ( π=3.14)

Find the area enclosed between two concentric circles of radii 3.5 cm and 7 cm. A third concentric circle is drawn outside the 7 cm circle, such that the area enclosed between it and the 7 cm circle is same as that between the two inner circles. Find the radius of the third circle correct to one decimal place.