What is the radius for a circle whose equation is x2 + y2 = 64

Step-by-step explanation:

step one :

Given that the equation of the circle is described as

To correctly identify the center of the circle we have to place the equation in the standard form.

the standard equation for a circle is

step two :

let us re-write the given equation so that we can compare it with the general equation of circle

step three:

From this above equation in step two we can see that the circle has a radius of 8

the answer is  

a.

4,624π mm2

step-by-step explanation:

1) letter c.

2) 4 square root of 9

hope this

step-by-step explanation: