What is the radius for a circle whose equation is x^2+y^2=64

8 is the radius.

Step-by-step explanation:

The standard form of a circle is .

However, I like to call it center-radius form because it tells us the center and the radius.

The center is and the radius is .

So your equation is .

So the center for this circle is (0,0) and the radius is 8.

If it wasn't so obvious that is 64 then you could have entered in your calculator to get 8.

the smallest possible measurement of the width is 14 feet

step-by-step explanation:

let's assume length of parallelogram is 'l'

width of parallelogram is 'w'

the perimeter of a parallelogram must be no less than 40 feet

so, we get

we are given

length of parallelogram is 6 feet

so,

l=6

we can plug it

now, we can solve for w

subtract both sides by 12

divide both sides by 2

and we get

so,

the smallest possible measurement of the width is 14 feet

the answer is (-4,-4)

hope this ! : d