What is the Symmetry in Geometrical ShapesSymmetry in Geometrical ShapesWe know that a polygon is a closed figure with three or more line segments. A polygon is called a regular if all of its sides and angles are equal. Thus, an equilateral triangle is a…

What is an Integer and give some ExamplesIntroduction While studying the properties of whole numbers, we found that the closure property does not hold good for the subtraction of natural numbers as well as whole numbers. This is because of the followin…

What is Comparing and Ordering of FractionsComparison of fractions are divided into three categories.1. Fraction with the same numeratorLet us consider the following fractions with the same numerator: \(\frac{1}{3}\), \(\frac{1}{2}\), \(\frac{1}{6}\) The…

What is an Equivalent FractionEquivalent FractionTo understand the concept of equivalent fractions, let us take an example – Rama gave four cakes to his four children. The first child cut his cake into two equal halves and ate the first half. The second…

What is the Area of a Right Circular ConeIf r, h and ℓ denote respectively the radius of base, height and slant height of a right circular cone, then- ℓ 2 = r2 + h2Area of base = πr2Curved (lateral) surface area = πrℓTotal surface area = πr (ℓ + r)Volume…

Addition and Subtraction of DecimalsFor addition/subtraction of decimals, we have to follow these steps:Step 1: Change the given decimals into like decimals. Step 2: Write the numbers in columns, so that decimal points should come in one column and tenth…

What is the Definition of an Equivalent DecimalEquivalent DecimalsDecimals are a type of fractional number. The decimal 0.2 represents the fraction \(\frac{2}{10}\). We know \(\frac{2}{10}\) is equivalent to \(\frac{1}{5}\), since \(\frac{1}{5}\) times o…

What is a Grouped Frequency Distribution TableThere are 3 methods for calculation of mean :Direct MethodAssumed mean deviation methodStep deviation method.1. Direct Method for Calculation of Mean According to direct method 2. Assumed Mean Method Arith…

What is the Radius of a Right Circular CylinderIf r and h denote respectively the radius of the base and height of a right circular cylinder, then – Area of each end = πr2Curved surface area = 2πrh = (circumference) heightTotal surface area = 2πr (h + r…

How do you Represent the Data in StatisticsRepresentation of dataThere are many ways to represent numerical data pictorially. Such as pictographs, bar graphs, etc. These graphs help in the suitable representation of the data.PictographA pictograph is a …