Class 8 Mathematics – Direct and Inverse Proportions 1. Introduction Proportion shows how two quantities are related to each other. Helps in solving real-life problems in speed, distance,...
Class 8 Mathematics – Exponents and Powers 1. Introduction Exponents (or powers) are a way to represent repeated multiplication of the same number. The base is the number being multiplied,...
Question: In a cyclic quadrilateral ABCD, AB = 4, BC= 5, CD = 9 and DA = 5. Find the length of the diagonal AC. (1) 8 (2) 7 (3) 6 (4) √61. Solution: AC*BD = 36+25 = 61 AC/BD = 20+45/...
Class 8 Science – Friction: Factors, Advantages, and Disadvantages 1. Introduction Friction is the resistance offered by a surface when one object moves over another. It opposes motion...