Tuesday 2/12

Here are the answers for your circumference packet. Please click on the pictures to enlarge them. Check your work and leave comments for anything you have questions about. *Please note that for a lot of you who handed work in, you used the formula to find Circumference with diameter (d) on questions for which you were given the radius (r). Remember, when given the diameter:

 C = πd 

But when given the radius, the formula changes:

C = 2πd 

This is because the radius of a circle is only half the length of the diameter. So we multiply the formula by 2. 

Circumference concludes Chp. 4 for us. Today's assignment is pg. 169, 3 - 20. You may only use a calculator for 17 - 20; when you take your actual test, you'll be required to show all work for adding, subtracting, multiplying, and dividing decimals. Please turn in your assignment at the end of class.