Section 6.2.  Read the entire section.  Answer the following questions.  Send an e-mail with subject line MA251 to .

1) Fill in the blanks:  In Example 4, a cross section of the solid has the shape of a _______ with inner radius _____ and outer radius _____ .

washer, x^2, x 
Garret Wright

2) Fill in the blanks:  The solids in Examples 1-5 are called _______ ___ _______ because they are obtained by revolving a region about a line. 

Solids of Revolution
Matthew Thomas

3) True or False:  The cross sectional area of a washer with inner radius r and outer radius R is given by A = pi(R - r)^2.

Deonte Johnson