anonymous
  • anonymous
find the length of the radius, the circumference, and the area of the circle. use 3.14 for pi. the diameter is 29.7cm (simplify your answer. type an integer or decimal)
Mathematics
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SOLVED
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jamiebookeater
  • jamiebookeater
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marihelenh
  • marihelenh
First, radius is half of the diameter, so do 29.7/2 to get the radius.
anonymous
  • anonymous
i know c=2xr*3.14 the area=3.14*r^2
anonymous
  • anonymous
\[\color{green}{1. \quad Radius = \frac{Diameter}{2} \\ 2. \quad Circumference = 2 \times \pi \times Radius \\ 3. \quad Area = \pi \times (Radius)^2}\]

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anonymous
  • anonymous
You need to find Radius to find the other two... Find the radius first of all @marihelenh told you to...
anonymous
  • anonymous
how to simplify if the radius is 14.85
marihelenh
  • marihelenh
Then the equation for circumference is C=2(pi)r and area equals A=(pi)r^2.
anonymous
  • anonymous
You can take it as 14.85 itself...
anonymous
  • anonymous
Do the approximation at the last...
anonymous
  • anonymous
WOULD IT be cm or cm^2
marihelenh
  • marihelenh
Circumference is cm. Area is cm^2.
anonymous
  • anonymous
or cm3
anonymous
  • anonymous
For Circumference, it will be cms only.. And for area, cm^2..
anonymous
  • anonymous
so the circumference is 93.258
anonymous
  • anonymous
would the radius be cm or cm2 or cm3
anonymous
  • anonymous
Radius will be in cms, diameter will be in cms, circum in cms and area will be in cm^2..
anonymous
  • anonymous
so my answer for the area is 692.44065 how to simplify it the circumference is 93.258 how to simplify that
marihelenh
  • marihelenh
The problem should tell you how it wants you to simplify. If it doesn't say, you probably do not need to worry about simplifying.
anonymous
  • anonymous
ok it just says simplify (simplify your answer. type an integer or decimal)

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