ple Choices
(Choose 1 answer)
(See picture)
A. (ii)
B. (i)
C. None of these
D. (iii)
Ε. (iv)
A spherical balloon is being inflated. Find the rate of increase of the surface area S = 4πr²with respect to the radius r when r = 1.
(1) -8π
(ii) 8π
(iii) 4π
(iv) -4π
I
