blaze9889t
16.07.2020 •
Mathematics
Find the area:
A.16
B.64
C.256
D.none of these
Solved
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Ответ:
64π in²
Step-by-step explanation:
The area of a circle is given by the formula ...
A = πr²
where r is the radius.
The radius of a circle is half the diameter. For the circle shown, the radius is ...
r = d/2 = (16 in)/2 = 8 in
Then the area is ...
A = π(8 in)² = 64π in²
Often, units are left off, so the appropriate choice might be 64π.
If you want to be technically correct (at the expense of getting your answer marked wrong), you can select "None of the above." That is because none of the offered choices have the correct units: square inches. You may want to discuss this with your teacher.
Ответ: