Find the radius of the circle x²+y²-4x+6y=12

Find the ratio between the fourth proportional of 12, 16, 6 and the third proportional of 4, 6.

The area of two equilateral triangles are in the ratio 25 : 36. Their altitudes will be in the ratio : 

Direction: Read the following table carefully and answer the following questions:

What is the ratio between the number of female workers and female employees of five companies?

Direction: What value will come in place of the question mark (?) in the following question?

33, 42, 67, 116, 197, ?

The average mathematics marks of two Sections A and B of class IX 131 the annual examination is 74. The average marks of Section A is 77.5 and that of Section B is 70. The ratios of the number of students of Section A and B is:

What should come in place of the question mark '?' in the following number series?

9, 19, 40, 83, ?, 345, 696

Directions : Read the graph and answer the following questions.

The number of years in which the income is more than the average income of the given years is