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 :-

B I personally think..

Step-by-step explanation:

Hi,

Use Differential Formula :

d(u(x) • v(x))/dx = u'(x) • v(x) + u(x) • v'(x)

at x = 1 :

d(u(1) • v(1))/dx = u'(1) • v(1) + u(1) • v'(1)

d(u(1) • v(1))/dx = -5 • 6 + 4  • -2

d(u(1) • v(1))/dx = -30 - 8

d(u(1) • v(1))/dx = -38

Hope this helped :)