## anonymous one year ago 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)

1. marihelenh

First, radius is half of the diameter, so do 29.7/2 to get the radius.

2. anonymous

i know c=2xr*3.14 the area=3.14*r^2

3. anonymous

$\color{green}{1. \quad Radius = \frac{Diameter}{2} \\ 2. \quad Circumference = 2 \times \pi \times Radius \\ 3. \quad Area = \pi \times (Radius)^2}$

4. anonymous

You need to find Radius to find the other two... Find the radius first of all @marihelenh told you to...

5. anonymous

how to simplify if the radius is 14.85

6. marihelenh

Then the equation for circumference is C=2(pi)r and area equals A=(pi)r^2.

7. anonymous

You can take it as 14.85 itself...

8. anonymous

Do the approximation at the last...

9. anonymous

WOULD IT be cm or cm^2

10. marihelenh

Circumference is cm. Area is cm^2.

11. anonymous

or cm3

12. anonymous

For Circumference, it will be cms only.. And for area, cm^2..

13. anonymous

so the circumference is 93.258

14. anonymous

would the radius be cm or cm2 or cm3

15. anonymous

Radius will be in cms, diameter will be in cms, circum in cms and area will be in cm^2..

16. anonymous

so my answer for the area is 692.44065 how to simplify it the circumference is 93.258 how to simplify that

17. 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.

18. anonymous

ok it just says simplify (simplify your answer. type an integer or decimal)