The sum of the areas of two circles touching extremely and whose centers are 15 cms apart is 153p cm2. The ratio of the radius of the bigger circle to that of the smaller circle is
Correct Answer : A
Ten straight lines, no two of which are parallel and no three of which pass through any common point, are drawn on a plane. The total number of regions (including finite and infinite regions) into which the plane would be divided by the lines is :
Two circles, both of radii 1 cm, intersect such that the circumference of each one passes through the centre of the circle of the other. What is the area (in sq cm) of the intersecting region?
Consider obtuse-angled triangles with sides 8cm, 15 cm andxcm. Ifxis an integer, then how many such triangles exist?