(i) The displacement vector mapping E to O (E’) defines four parallelograms: E E’ S’ S, E E’ O’ O and E E’ M’ M. Translations preserve edge lengths and angles, guaranteeing an exact congruent match. (ii) Translating along both ...
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Rotating forms a cone with height 8 cm, radius 6 cm and slant height 10 cm. Volume is (1/3)π(6²)(8) = 96π ≈ 301.71 cm³. Curved surface area is π(6)(10) = 60π ≈ 188.57 cm². Cbse Class 9 Maths Ganita Manjari Part ...
Using the cone volume formula V = (1/3)πr²h, we have 1570 = (1/3) × 3.14 × r² × 15. Simplifying gives 5 × 3.14 × r² = 1570, resulting in r² = 100, so r = 10 cm. Ganita Manjari part ...
(i) Cube volume is 12³ = 1728 cm³. (ii) Rod volume is (22/7) × 2² × 12 = 1056/7 ≈ 150.86 cm³. (iii) Number of complete rods is 1728 ÷ (1056/7) = 11.45, giving 11 complete rods. Class 9 Chapter 14 ...
Here, a₁/a₂ = 5/7 and b₁/b₂ = -4/6 = -2/3. Since a₁/a₂ ≠ b₁/b₂, the system possesses a unique solution, meaning the lines intersect at a single point. Class 9 Maths (Ganita Manjari part two) Chapter 13 questions answer Class 9 ...