Application of DerivativeEasy
Question
The radius of a spherical soap bubble is increasing at the rate of 0.2 cm/sec, then the rate of increase of its surface area, when the radius is 7 cm.
Options
A.12.2 π cm2/sec
B.11.2 π cm2/sec
C.10.2 π cm2/sec
D.9.2 π cm2/sec
More Application of Derivative Questions
The slope of tangent to a curve y = f (x) in [x, f (x)] is 2x + 1 If the curve passes through the point (1, 2) then the ...A tangent to the curve y = x2 + 3x passes through a point (0,− 9) if it is drawn at the point-...The angle of intersection between the curve y = 4x2 and y = x2 is -...The normal to the curve x = a (1 + cos θ), y = a sin θ at the point θ always passes through a fixed point...If at any point (x1, y1) on the curve the subtangent and subnormal are equal, then the length of tangent is equal to-...