The circumference (c) c of a circle is 18 18 centimeters. which formula can you use to find the radius (r) r if you know that c=2πr c = 2 π r ?

C = 2πr

r = radius

c = circumference = 18

Plug in the corresponding numbers with variables.

18 = 2πr

Isolate the r. Divide 2 and π from both sides

(18)/2π = (2πr)/2π

9/π = r

C/π = r is your formula to finding r.

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Step-by-step explanation:

The circumference of a circle is given by :-

, r is the radius of the circle.

To write the formula to find radius (r), we nee to divide on bopth the sides on the above equation, we get

, where C is the circumference of the circle.

If Circumference = 18 centimeters

Then, the formula to find radius is given by :-

-10i^2-4i

step-by-step explanation:

evaluate for p=2,q=5i

(2−4)(2+5i)i

(2−4)(2+5i)i

=−10i2−4i

b. would be the answer : )

step-by-step explanation:

step 1: add -16x to both sides.

16x−4y+−16x=64+−16x  

−4y=−16x+64

step 2: divide both sides by -4.

−4y /-4 = -16x + 64/-4

answer:   y=4x−16

hope i'm right