Thursday

July 31, 2014

July 31, 2014

Posted by **Thomas** on Sunday, January 5, 2014 at 4:55pm.

please answer and explain

- math -
**Ms. Sue**, Sunday, January 5, 2014 at 4:57pm162 pi

- math -
**Thomas**, Sunday, January 5, 2014 at 5:01pmmy answer is 162 pi too, but the answer is

a. 18 pi

b. 36 pi

c. 36 pi^2

d. 324 pi

e. 324 pi^2

- math -
**Steve**, Sunday, January 5, 2014 at 6:42pmif a = 81pi, r = 9

if r = 18, c = 36pi

**Related Questions**

math - A circle has an area of 25 pi cm^2.If a circle is drawn within that ...

Updated Math Question - The radius of circle A is 9 times greater than the ...

Math - The radius of circle A is 9 times greater than the radius of circle B. ...

8th grade math - circle A has a raduis that is twice the length og the raduis of...

math - the radius of a circle when the numeric values of the circumference and ...

math - A triangle has an area of 15 cm^2 and a base of 5 cm. If a circle is ...

Geometry - What is the radius if the area of the circle is: 4x^2(PI) My answer ...

Math - Two perpendicular diamters(cutting each other at right angles) of a ...

math - The number of square units in the area of circle P is equal to the number...

math - Find the area of the partial circle, use 22/7 for pi. 1.) radius = 27 cm ...