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Write and simplify an expression for the axact area of 6 cms(circle). make sure to include your units in your final answer!Find the approximate area of your circle using 3.14 for pi. make sure to include your units in your final answer!You don't have to answer this question for me I just need help on how to solve it. My math teacher is also very busy. OoF.

Sagot :

D.

The area of a circle is given by:

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

Since the diameter is 6 cms this means that the radius is 3 cm (remember that the radius is half the diameter).

Then:

[tex]A=\pi(3)^2=9\pi[/tex]

Therefore the exact area of the circle is 9pi squared centimeters.

E.

To find the approximate area we plug 3.14 instead of pi in the last expression, then:

[tex]A=3.14\cdot9=28.26[/tex]

Therefore the approximate area of the circle is 28.26 squared centimeters.

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