Application of DerivativeHard
Question
The side of a square sheet is increasing at the rate of 4 cm per minute. The rate by which the area increasing when the side is 8cm long is -
Options
A.60 cm2/minute
B.66 cm2/minute
C.62 cm2/minute
D.64 cm2/minute
Solution
A = x2
= 2x × 
= 2 × 8 × 4 = 64 cm2/minute
= 2x × = 2 × 8 × 4 = 64 cm2/minuteCreate a free account to view solution
View Solution FreeMore Application of Derivative Questions
Let f(x) = the set of values of b for which f(x) has greatest value at x = 1 is given by :...The equation of normal to the curve x2 + y2 = a2 at the point is-...If f(x) and g(x), where 0...For the parabola y2 = 4ax, the ratio of the subtangent to the abscissa is -...Let f(x) = ∫ ex(x - 1)(x - 2)dx. Then f decreases in the interval...