Total Surface Area of a Cylinder: Let us carry out a small activity. Take a ring. We know that ring is circular in shape. Now place another ring on the first ring and so on. You will see that when you place such rings, the structure that you get is a cylinder, which is three dimensional. Let us learn about the volume of a Cylinder and Total Surface area of a Cylinder in this … [Read more...]

## Vedic Maths | 2 Second Maths Tricks

Vedic Maths: Vedic Maths book was written by Swami Bharati Krishna Tirtha, who was an Indian monk. It was first published in 1965. Veda is basically a Sanskrit word, which means Knowledge. It has a list of mental calculation techniques which are said to be present in the Vedas. This book is actually mentioned as Vedic Mathematics. This has been criticized by academics, who have … [Read more...]

## HCF AND LCM WORD PROBLEMS

HCF and LCM Word Problems : In this section, we will learn how to solve word problems involving highest common factor and lowest common multiple. HCF and LCM Word Problems Problem 1 : Six bells commence tolling together and toll at intervals of 2, 4, 6, 8 10 and 12 seconds respectively. In 30 minutes, how many times do they toll together? (excluding the one at … [Read more...]

## BODMAS Rule – Definition, Formula and Example Questions

BODMAS RULE: We must remember the word VBODMAS in solving sums on simplification. These letters stand for vinculum, bracket, of, division, multiplication, addition and subtraction respectively. The sums on simplification must be solved in that order i.e., first solve vinculum followed by bracket and so on until the sum is solved. V Vinculum means bar as … [Read more...]

## Trig Cheat Sheet, Trig Identities, Inverse Trig Functions Cheat Sheet

Trig Cheat Sheet Trig Cheat Sheet: Trigonometry is the study of triangles, which contain angles, of course. Get to know some special rules for angles and various other important functions, definitions, and translations. Sines and cosines are two trig functions that factor heavily into any study of trigonometry; they have their own formulas and rules that you’ll want to … [Read more...]