Answer:
Area of the circle = 
Step-by-step explanation:
Radius of the circle= 3 cm
Area of the circle=
As,

Putting the values in the formula:
Area of the circle= 

The area of the circle is 
Answer:
112
Step-by-step explanation:
Answer: x^5y^2
Step-by-step explanation:
Differentiate it
get f ' (x)=3x^2-4
put 3x^2-4=0
x=2/√3,-2/√3
so interval
x∈(-2/√3,2/√3)