What is the area of a circle that has a circumference of 42 inches? A. 140.4 in2 B. 126.60 in2 C. 132.62 in2 D. 21.04 in2
1 answer:
Circumference = 2

r
42 = 2

r
42/(2

) = r
21/

= r
Area =

r²
=

(21/

)²
= 21²/

= 140.37
≈ 140.4
Answer: A
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