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The function f(r) gives the area of a circle with radius r. It can be written in equation form as f(r) = 3.14r2. What is f(5)? A. 28.14 B. 31.40 C. 246.49 D. 78.50
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The function f(r) gives the area of a circle with radius r. It can be written in equation form as f(r) = 3.14r2. What is f(5)? A. 28.14 B. 31.40 C. 246.49 D. 78.50
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Apr 2, 2017
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The function f(r) gives the area of a circle with radius r. It can be written in equation form as f(r) = 3.14r2. What is f(5)?
A. 28.14
B. 31.40
C. 246.49
D. 78.50
Mathematics
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Ilya Sazonov
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Ilya Sazonov
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Answer:
D. 78.50
Explanation:
apex.
MinecraftShamrock
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Apr 4, 2017
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f(r) = 3.14r^2....and ur looking for f(5)....so basically all u do is sub in 5 for r.
f(5) = 3.14 * 5^2
f(5) = 3.14 * 25
f(5) = 78.50 <===
Nixda
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Apr 9, 2017
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