The circumference of a circle is 4 pi find the radius and the area of the circle show your working clearly

Step-by-step explanation:

To find the radius of a circumference of a circle

C=2π r

C=4π

4π=2×π×r

To get radius

Divide through by 2π

r=2

To find the area

A=πr^2

A=3.142×2^2

A=3.142×4

A=12.568 units square

y = 5x + 17

step-by-step explanation:

a perpendicular line will be the opposite reciprocal slope of the given equation.   the slope given is -1/5 so the opposite reciprocal is 5

find b:

7 = 5 (-2) + b

7 = -10 + b

17 = b

write equation

y = 5x + 17