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A circle has a diameter of 12cm. What is the area of the circle in square centimeters?
A) 75.36 cm2
B)113.04 cm2
C)452.16 cm2
D)37.68 cm2

Respuesta :

Answer:

B. 113.04 cm^2

Step-by-step explanation:

The area of a circle is:

a=[tex]\pi[/tex]r^2

Because we have the diameter, we need to find the radius.

d=2r

12=2r

Divide by 2 on both sides

r=6

Plug 6 in for "r" in the area formula.

a=[tex]\pi[/tex]r^2

a=[tex]\pi[/tex]6^2

a=36[tex]\pi[/tex]

a=36*3.14

a=113.04 cm^2

So the answer is choice B

Hope this helps!

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