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 – Microorganisms: Friend and Foe 1. Introduction Microorganisms (microbes) are tiny living organisms not visible to the eye. Found everywhere: air, water, soil, humans,...
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...
Class 8 Mathematics – Comparing Quantities 1. Introduction Comparing quantities means analyzing how one quantity relates to another. Useful in daily life, business, and finance. Main...