Units of relative density …………………  A) g/cm^3 

Correct option is  D) 8/9

Correct option is (C) 3 Area of rectangular sheet \(=(\sqrt{5}+\sqrt{2})(\sqrt{5}-\sqrt{2})\) \(=(\sqrt{5})^2-(\sqrt{2})^2\) = 5 - 2 = 3 square units

Correct option is (D) (3, 8) The distance of point from Y-axis is x = 3 and the distance of point from X-axis is y = 8. \(\therefore\) Point is (3, 8).

Correct option is (A) (5, 4) x = Obscissa = Distance of point from Y-axis = 5, y = Ordinate = Distance of point from X-axis = 4. Thus, the point is (5, 4).

Correct option is (A) bh Area of a parallelogram = Base \(\times\) Height = bh square units

Correct option is (C) 1 Area of flag \(=\frac12\times\) Base \(\times\) Height \(=\frac12\times(2+\sqrt2)\times(2-\sqrt2)\) \(=\frac{4-2}2\) = 1 square units

A) Density of the object/density of water

 B) \(\cfrac{density \,of \,object}{density \,of \,water}\)