If θθθθθ and cotθ=?

In ΔABC, AB=c cm, AC= b cm and CB=a cm, If  ∠A=2 ∠B, then which of the following is true?

The volume of a solid right circular cylinder is 5236 cm³, and its height is 34 cm. What is its curved surface area (in cm²)?

If there are four lines in a plane, then what cannot be the number of points of intersection of these lines? 

The simple interest on a sum  of money is of the sum. If the number of years is numerically half the rate percent per annum, then the rate percent per annum is 

Directions:  Study the bar-graph given below & answer the questions.
Pie-chart given below shows the percentage distribution of total no. of boys in six different Schools.
Total Boys in all schools together = 6400

If the ratio boys to girls in School A and School B is 2 : 3 and 3 : 7 respectively. Then find the difference of total girls in school B and A?

If the area of a circle is 9π sq.cm then it circumference is

Two men are standing on opposite ends of a bridge 1200 meters long. If they walk towards each other at the rate of 5m/minutes respectively, in how much time will they meet each other?