One side open cylinder drum has an inner radius of 28cm and height 2.1m. How much water can be stored in the drum? Express in liters. (1litre=1000 cc)

What are the differences between similar triangles and congruent triangles?

What are Armstrong numbers?

All real numbers are rational numbers.

A) True

B) False

The L.C.M of the smallest 2 digit composite number and the smallest composite number is:

• (a) 12
• (b) 4
• (c) 20
• (d) 44

Are all natural numbers also whole numbers?