If Cos \(\theta\) = \(\frac{12}{13}\). Find 1 + cot\(^2\)\(\theta\)

A cylinder pipe, made of metal is 3cm thick.If the internal radius of the pope is 10cm.Find the volume of metal used in making 3m of the pipe.

If the heights of two circular cylinders are in the ratio 2 : 3 and their base radii are in the ratio 9:8, What is the ratio of their volumes?

The locus of a point which moves so that it is equidistant from two intersecting straight lines is the?

4, 16, 30, 20, 10, 14 and 26 are represented on a pie chart. Find the sum of the angles of the bisectors representing all numbers equals to or greater than 16