Question

the area of a blot of ink is growing such that after t secoend ,its area is given by a=(3t²+7)cm²,calculate the rate of area at t=5 sec

Answer 1

Answer:

WE ARE

Given that

A = 3t²+ 7

Here we can find out the value of A easily if we differentiate it ,

On doing differentiation we obtain

area = dx/dt

= d ( 3t² + 7 ) / dt = 6t

we are given that t = 5SECS

Now putting t = 5

A = 6 × 5

A = 30 cm²

Explanation:

Answer 2

Answer:

82cm^2

Explanation:

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