Answer:
3x4^3/34
3×64/34=192/34=96/17 or 5.64
It equals zero negative plus positive equals zero
Answer:
The derivative is

Step-by-step explanation:
The function is given by

Differentiate with respect to x, we get

The Area of the lawn is:
20m x 14m = 280m^2
The Area of the Circle is:
pi x 5^2 = 78.54
280 - 78.54 = 201.46m^2