Match Column I with Column II

MATHEMATICS · Subjective · A Level · Mathematics · Differentiation · Differentiation

Problem

Match Column I with Column II.

Column I	Column II
(a) A circular plate is expanded by heat from radius 6 cm to 6.06 cm. Approximate increase in the area is	(p) 5
(b) If an edge of a cube increases by 2%, then the percentage increase in the volume is	(q) $0.72\pi$
(c) If the rate of decrease of $\frac{x^2}{2}-2x+5$ is thrice the rate of decrease of $x$ , then $x$ is equal to (rate of decrease is non-zero).	(r) 6
(d) The rate of increase in the area of an equilateral triangle of side 30 cm, when each side increases at the rate of 0.1 cm/s, is	(s) $\frac{3\sqrt{3}}{2}$