Practice Limits and Continuity - TS EAMCET & AP EAMCET Offered by Unacademy

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Limits and Continuity

Quick practice

Question 1 of 5

find the rate of change of the total surface area of right circular cone w.r.t.radius.(cone angle remain constant), when r = 5 cm.

A

$5 \pi(2+\operatorname{cosec} \theta) \mathrm{cm}^{2} / \mathrm{cm}$

B

$10 \pi(1+\cos \theta) \mathrm{cm}^{2} / \mathrm{cm}$

C

$10 \pi(1+\operatorname{cosec} \theta) \mathrm{cm}^{2} / \mathrm{cm}$

D

$5 \pi(4+\operatorname{cosec} \theta) \mathrm{cm}^{2} / \mathrm{cm}$