The equation for the circle below is x ^2 + y^2 = 100. what is the length of the circles radius?

10 units.

Step-by-step explanation:

The equation of the circle in Center-radius form is:

Where the center is (h,k) and "r" is the radius.

The equation of the circle given is:

You can observe that is written in Center-radius form.

Then, you can identify that:

Knowing this, you need to solve for "r" to find the lenght of the radius.

This is:

Therefore, the lenght of the radius is 10 units.

step-by-step explanation:

given perimeter: 28cm

length: 9cm

atp,

2(l+w)=p of the reactangle

2(9+x)=28

18+2x=28

2x=28-18

x=10/2

x=5

therefore width is 5 cm