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Andre45 [30]
3 years ago
6

Find the circumference of a circle with an area of 530.93

Mathematics
1 answer:
HACTEHA [7]3 years ago
7 0
A = <span>π r^2
r^2 = A/</span><span>π
r^2 = 530.93 / 3.14
r^2 = 169.08
    r = 13

C = 2 </span><span>π r
C = 2 (3.14)(13)
C = 81.64

answer
81.64 m</span>
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Find the area of the shaded region.
Citrus2011 [14]

Answer:

pi × 18cm^2

Or approximately,

56.52cm^2 (using 3.14 for pi)

or

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All circles are 360°.

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((If you read my answer before the edit, I am sorry. I made a calculator error.))

3 0
3 years ago
Quincy says that 3 is a good estimate for 3.4 X 0.09, is he correct? Why?
lord [1]
<span>Quincy says that 3 is a good estimate for 3.4 X 0.09, is she correct? Why?
When we say estimates meaning it is not the exact answer but close to what is the exact.
Now, if Quincy estimated 3 as the product of 3.4 * .09, then let’s check if she has the correct estimates.
=> 3.4 estimates is 3
=> 0.09 estimates is 0.1
Now the answer is 0.3 and not 3.
Thus, Quincy’s estimate is wrong.</span>



4 0
3 years ago
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