Find the circumference and area of a circle with a diameter of 22 inches. Leave your answers in terms of pi.

C = 11π; A = 44π
C = 22π; A = 44π
C = 11π; A = 121π
C = 22π; A = 121π

Question

Find the circumference and area of a circle with a diameter of 22 inches. Leave your answers in terms of pi.

 	
	C = 11π; A = 44π
	C = 22π; A = 44π
	C = 11π; A = 121π
	C = 22π; A = 121π

anonymous · Answer

Circumfrence is 2pi(r)

C = 2pi(r)

Radius in diameter / 2
r = d/2 -> r = 22/2 -> r = 11

So C = 2pi(11)

Which is C = 22pi

Area is pi(r)^2

We know r = 11

A = pi(11)^2

A = pi(121)
C=22π

A=121π

sleepyhead314 · Answer

Hello! :)
I saw you ask for help in the Math chat, and so here I am xD

and what you've just posted is completely correct! :D
good job!

anonymous · Answer

Yay, but if yeah I suck at this so would you mind helping on any further questions?I have a big assignment so I might have a few.

sleepyhead314 · Answer

sure :)