Two cones have their heights in the ratio 1:3 and the radii of their bases in the ratio 3:1. Find the ratio of their volumes?

$$\sqrt{x}÷ \sqrt{144} = 0.02, $$ then the value of x is 

A rational number between $${3\over4} $$ and $${3\over8} $$ is :

The compound interest on 12000 for 9 months at 20 % per annum , interest being compounded quarterly is 

Find the area of the circle formed in an equilateral triangle of side 42 cm. Using (π=22/7)

Directions: The following table represents the percentage marks of four students in six subjects.
Consider the table and answer questions based on it

Average marks obtained in Science is higher than that of Maths by

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

23 × 45 ÷ 15=?

What is the reflection of the point (-3, 1) in the line x = -2?