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MA341 HOMEWORK #9
Due Friday, December 3

  1. Book, Section 3.8, #6, 8.
  2. Write up your solutions to the circles on spheres problems in Section 8.2 of my notes. In particular
    1. Find and prove the formula for the circumference C of a circle of radius r.
    2. What is C when tex2html_wrap_inline29 ? When tex2html_wrap_inline31 ? Why does this make sense?
    3. Prove that tex2html_wrap_inline33 when tex2html_wrap_inline35 .
    4. Prove that

      displaymath19

    5. Find and prove the formula for the area of A of a circle of radius r.
    6. What is A when tex2html_wrap_inline29 ? When tex2html_wrap_inline31 ? Why does this make sense?
    7. Prove that tex2html_wrap_inline47 when tex2html_wrap_inline35 .
    8. Prove that

      displaymath20



Carl Lee
Wed Nov 24 07:42:06 EST 1999