Q49. If the rate of change of a circle's circumference is 6 m/s, what is the rate of change of its radius?Mathematics — NUST Mock 1 — Question 49 of 200A. 4/π m/sB. 2/π m/sC. 3/π m/sD. 6/π m/sPractice more Mathematics MCQs for entrance exam preparation on Examora.io.← Previous Question Next Question →