Imagine the function weight
that computes the weight of a fern in pounds. Leaves weigh 0.5 pounds per unit area. For a branch, if the length is and the thickness is
, the weight (in pounds) is
Compute the weights of your example ferns (leaving the answer as a formula in terms of is fine -- that's what the little man is for, after all).
Solution
5 10001000
+5