Find the volume of the sphere. Leave the answer in terms of π.

Area= 81 π

Step-by-step explanation:

The formula for area of a circle is

πr2

Where

r denotes the radius of the circle.

Equating the formula for area with the area of the circle provided.

πr2=81π

r2=81

r=√81

r=9 inches

the formula for volume is

V=4/3πr³

4/3pi9³

V≈3053.62806 m³

f(2x−x2)=−3x2+6x−1

step-by-step explanation:

set up the composite function and evaluate.

f(2x−x2)=−3x2+6x−1

it would open into a square depending on the type of envelope i’m not sure about the second part