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Irina18 [472]
3 years ago
9

Write an expression which solves for the radius of an object having the circumference of 30 feet

Mathematics
2 answers:
Likurg_2 [28]3 years ago
8 0
circumference=30ft.\\\\circumference=2\pi r\ (r-radius)\\\\2\pi r=30\ \ \ \ /:2\pi\\\\r=\frac{30}{2\pi}\\\\r=\frac{15}{\pi}\ (ft)\\\\\frac{15}{\pi}\approx\frac{15}{3.14}\approx4.78\ (ft)
sergiy2304 [10]3 years ago
4 0
C=2pi(r)
30=2pi (r)
r=(30)/(2pi)
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