Quantitative Aptitude - Arithmetic Ability Questions

The radius and the height of a cone are each increased by 20%. Then the volume of the cone increases by

The copper wire when bent in the form of a square encloses an area of 121 cub.cm. If the same wire is bent into the form of a circle, find the area of the circle.

A prime number

The simple interest on a sum of money is 16/25 of the principal. The number of years is equal to the rate of interest per annum. What is the rate (in percentage) of interest per annum?

If the standard deviation of a population is 7, what would be the population variance?

What is the square root of 5041?

The square root of which of the following numbers is irrational?

The line parallel to the BC of the triangle ABC divides the other two sides at the point D and E in such a way that AB=3AD. Calculate the ratio of DE and BC.