Area of the first circle = 16(pi)
We know that
Area of a circle = (pi) * (Radius)^2
Then
16(pi) = (pi) * (radius) ^2
(4)^2 = (Radius)^2
Radius = 4
Diameter = 8
Circumference = (pi) * Diameter
= 8(pi)
In case of the second circle
Area = (pi) * (Radius) ^2
25(pi) = (pi) * (Radius)^2
(5)^2 = (Radius)^2
Radius = 5
Diameter = 10
Circumference = 10(pi)
So
Circumference of first circle:Circumference of second circle = 8(pi):10(pi)
= 4:5

4 0

3 years ago

WILL MARK BRAINLIEST!!!!

Sonja [21]

$f(x)=\dfrac{4}{x}\qquad\qquad\qquad g(x)=\dfrac{4}{x}\\\\\\\\f(g(x))=f(\frac{4}{x})=\dfrac{4}{\frac{4}{x}}=4\cdot\dfrac{x}{4}=\boxed{x}\\\\\\\\ g(f(x))=g(\frac{4}{x})=\dfrac{4}{\frac{4}{x}}=4\cdot\dfrac{x}{4}=\boxed{x}$

so f and g are inverses.

6 0

3 years ago

The volume of a cube depends on the length of its sides.This can be written in function as v(s).What is the best interpretation

Natasha_Volkova [10]

Answer:

Step-by-step explanation:

We know that,

Volume of cube = (side)^3

Fro side length s , we can write:

V(s) = s^3 , where volume is the function of s.

Now ,

We have given : v(4) = 64

If we compare this with v(s) = s^3

Then we get s =4 , i.e side length of cube is 4

Also 64 = 4^3 , i.e volume of cube is 64.

So we can interpret this as: A cube with side lengths of 4 feet has a volume of 64 cubic feet

8 0

3 years ago