When a sphere is cut by a plane which passes through the center, it will create a circle that has the same diameter of the sphere.
To represent this area, you will use the formula for finding area of a circle.
A= pi x r^2
Pi x 5^2
A = 25 x pi or choice B
The answer is 4 trust me bro
Standard form: Ax+By=C
first put in slope-intercept form:
slope = (0+5)/(6-3) = 5/3
pick point D: 0 = 5/3(6)+b -> b= -10
slope-intercept form: y=(5/3)x-10
multiply both sides by 3:
3y=5x-30
put in standard form:
5x-3y=30
Your selections are correct, and the last one should be simplifying.