∆ABC is a right angle triangle BD⊥AC. If AD = 12 cm and DC = 8, then BD = ?

A circle with radius 42 cm is drawn. What will be length of arc of a sector subtending an angle of 60 degrees at the Centre?

A circle is inscribed in a equilateral triangle of side 24 cm. What is the area ( in cm²) of a square inscribed in the circle?

G is the centroid of a triangle ABC, and the median is AD, the ratio of AD and GA is

PAB and PCD are two secants to a circle . If PA 10 cm , AB = 12 cm and PC = 11 cm , then what is the value ( in cm ) of PD ?

Each side of an equilateral triangle is 4 cm. What will be its area?

In △PQR, ∠P = 90°. S and T are the mid points of sides PR and PQ, respectively. What is the value of RQ²/(QS²+ RT²)?

If the circumcenter of the triangle lies outside it, then the triangle is