CIRCLES

Circle inside a Circle : PQRS is a diameter of a circle of radius 6 cm. The length PQ, QR and RS are equal. Semi circles are drawn on PQ and QS as diameters, as shown in Figure. Find the perimeter and area of shaded Region.

The figure shows a rectangle ABCD with a semi-circle and a circle inscribed inside it as shown. What is the ratio of the area of the circle to that of the semi-circle ?

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?

The cicrcumference of a circle is give by the formula C = pid where d is the diameter of the circle. The formula for the area of a circle is A = pir^2 . If the area of the circle is 9pi , what is the circumference of the circle ?

A particle is moving in a circle of radius R . a. What is its displacement when it covers (i) half the circle, (ii) full circle? b. What is its distance when it comers (i) half the the circle and (ii) full circle ?. .

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