Posted by **kayle** on Thursday, August 5, 2010 at 4:56pm.

a target consists of five concentric circles, each with a radius 1 inch longer than that of the previous circle. calculate the area between the third and fourth circles from the center.

- geometry -
**Ms. Sue**, Thursday, August 5, 2010 at 4:58pm
What is the radius of the smallest circle?

- geometry -
**kayle**, Thursday, August 5, 2010 at 5:28pm
the radius of the smallest circle is one inch

- geometry -
**Ms. Sue**, Thursday, August 5, 2010 at 5:35pm
A = pi * r^2

3rd circle:

A = 3.14 * 9

A = 28.26 sq. inches

4th circle:

A = 3.14 * 16

A = 50.24 sq. in.

50.24 - 28.26 = ?

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