Monday

September 22, 2014

September 22, 2014

Posted by **John** on Tuesday, August 19, 2014 at 10:34pm.

- Math -
**Reiny**, Tuesday, August 19, 2014 at 10:40pmradius of larger circle --- r

radius of smaller circle --- r-1

circumf of large ---- 2πr

circumf of smaller = 2π(r-10

but 2πr = 4(2π(r-1))

2πr = 8πr - 8π

divide each term by π and rearrange equation

-6r = -8

r = 8/6 = 4/3

larger has radius 4/3

smaller has radius 1/3

I will leave the checking up to you,

- Math -
**John**, Tuesday, August 19, 2014 at 10:50pmHATS OFF ! Amazing is a less adjective for you. Thank you.

**Answer this Question**

**Related Questions**

Algebra - The Circumference and area of a circle of radius r are givin by 2 [pie...

Math - 23.What is the approximate circumference of a circle with a radius of 6 ...

Math - What is the approximate circumference of a circle with a radius of 6 ...

Geometry - A circle with a radius of 1/2 ft is dilated by a scale factor of 8. ...

triggg - Suppose a circle has a radius of 4.5 inches. If you double the radius ...

math - I'm asked to find the circumference of a circle to the nearest tenth and ...

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

c programming - To see how the four steps of the software development procedure ...

c# programming - To see how the four steps of the software development procedure...

math - The area of circle c is 81 pi . if the radius of the circle is doubled, ...