Simple Interest: Definition, Examples and Formulas What is interest? First lets understand what is Interest. When we borrow money from a bank, we must pay a fee in addition to the amount borrowed. The extra money we pay is known as the interest. Interest is an additional amount of money that is paid by the […]
Read More →Problems – Solutions – Profit and Loss – Formulas Important Facts The cost price is the price at which a product orservice is purchased by seller. The selling price is the price at which a product or service is sold to the buyer. When the selling price (SP) is greater than cost price(CP) […]
Read More →Interior & Exterior angle of a polygon In this lesson we will learn the, (1) Solutions of problems on interior and exterior angles of a polygon. Example 1: Find the sum of all interior angles in a regular triangle (3-sided). Solution: Step 1: Write the formula Sum of interior angles of a polygon = (n-2) […]
Read More →Concave Polygons: Definition – Examples & Properties All polygons is either convex or concave. A polygon will be convex or concave, it depends on the measure of their angles. What is a Concave Polygon? A concave polygon have at least four sides, and concave polygon is just opposite of a convex polygon. If the measures […]
Read More →Arc – Geometry In mathematics the word arc also used for some other curved shapes like an ellipse but mostly used for a circle. Definition: An arc is a portion of the circumference of a circle. It is also known as circular arc. In above figure AB […]
Read More →How to Find Median Value of Odd and Even Set of Data In this lesson we will learn how to calculate the median of a data set, when data set has odd and even numbers or observations. To learn the median of a data set, first we should understand what is median. (You can learn […]
Read More →Law of Tangents – Definition – Formula – Proof and Examples In trigonometry, the law of tangents describes the relationship between the sum and difference of sides of a right triangle and tangents of half of the sum and difference of the angles opposite to the sides. Formulas for law of tangents The law of tangents […]
Read More →Simple Interest Word Problems Example 1: What is the simple interest and amount of $ 2000 at the rate of 8% per year for 2 1/2 years. Solution: Principal amount = P = $ 2000 Rate of interest per year = R = 8% Time for which it is borrowed = T = 2 1/2 year Thus, simple […]
Read More →Diagonals of Polygon’s In geometry, a line segment joining two vertices of a polygon or polyhedron, when those vertices are not adjacent is known as Diagonal. Diagonals of Polygon’s A polygon’s diagonal’s are line segments, that joining from one corner to another corner. Formula for number of diagonals = n(n-3)/2 where n is number of sides or […]
Read More →Introduction – Percentage Definition: A Percent is a number or ratio expressed as a fraction of 100. In other words, Percent is a fraction of denominator 100. Percent is denoted by the symbol %. ‘Per’ ‘cent’ means out of 100. The percent symbol is written to the right side of the number, like this 15%. Example: 25% (read as twenty five percent) […]
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