Two chords AB and CD of a circle when produced, meet at a point P outside the circle. If AB = 6 cm, PB = 5 cm, PD = 4 cm, then CD is equalto:
The different between the length and breadth of a rectangle is 6 m. If its perimeter is 64 m, then its area is:
If a and b are the lengths of two sides of a triangle such that the product ab = 24, where a and are integers, then how many such triangles are possible?
Two circles touch internally. Their diameters are, respectively, 8 cm and 4 cm. What is the distance (in cm) between their centres?
The sum of the radius of the base and the height of a closed solid cylinder is 12.5 cm. If the total surface area of the cylinder is 275 sq.cm, then its radius is
Let O be the centre of a circle. PA and PB are tangents to the circle from a point P outside the circle and A and B are points on the circle, If angle APB = 50 deg, then angle OAB is equal to:
PQR is an isosceles triangle with PQ = PR = 25 cm. If PS is the median on QR from P such that PS = 7 cm, then the length of QR is:
Two circles of radii 20 cm and 5 cm, respectively, touch each other externally at the point P, AB is the direct common tangent of those two circles of centres R and S, respectively. The length of AB is equal to:
The distance between the centres of two equal circles each of radius 4 cm is 17 cm. The length of a transverse tangent is:
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