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Question 17

The radius of a sphere is increasing at a rate \(3cm s^{-1}\). Find the rate of increase in the surface area, when the radius is 2cm. 

  • A.\(8\pi cm^{2}s^{-1}\)
  • B.\(16\pi cm^{2}s^{-1}\)
  • C.\(24\pi cm^{2}s^{-1}\)
  • D.\(48\pi cm^{2}s^{-1}\)
Objective

Question details

Exam body
WAEC
Subject
Further Mathematics
Year
2014
Question no.
#17
Type
Objective
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