Question

In physics, pressure is the amount of force exerted on a surface per unit area, P=F/A .The pressure, in atmospheres (atms), of a liquid on the circular base of a bucket is represented by the composite function (P ∘ A) (r), where P (A) = 375 / A and A (r) = pi r^2 What is the domain of the composite function?

a. {all real numbers}
b. r
c. r
d. r<0

Answer 1

The answer is c

edge. done it

Explanation:

Answer 2

r

Explanation:

Pressure is the amount of force exerted on a surface per unit area, P=F/A.

The pressure, in atmospheres (atms), of a liquid on the circular base of a bucket is represented by the composite function PoA(r), where P(A) = 375 / A and A (r) = pi r²

We know that the domain is the set of input values.

Pressure,
`P=(F)/(\pi r^2)`

At r = 0, it becomes not defined.

It means that r can be any value that is greater than 0. Hence, the correct option is (c). i.e. r>0