The sides of a triangle are 56 cm, 90 cm and 106 cm. The circumference of its circumcircle is:

In the given figure , DE‖BC and AD:DB=5:3, then what is the value of DE|BC?

The area of a triangle with vertices A (0, 8), O (0, 0), and B (5, 0) is :

The difference between the interior and exterior angles at a vertex of a regular polygon is 150°. The number of sides of the polygon is

The length of two chords AB and AC of a circle are 8 cm and 6 cm and ∠BAC=90º, then the radius of circle is

An exterior angle of a regular polygon is 72^o. The sum of all the interior angles is -

When a diagonal of a square is 24 cm then find out of its perimeter.

In ∆ABC, AD is the internal bisector of ∠A, meeting the side BC at D. If BD = 5 cm, BC = 7.5 cm, then AB : AC is