Find (i') the lateral or curved surface area of a closed cylind rical petrol storage tank that is 4.2 m in diameter and 4.5 m high. (ii) how much steel was actually used, if of the steel actually used was wa.vted in ma.king the tank.

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?