cunning Areas, December 98
it is Xmas time, I want to be cool with your brain cells! Here are
2 easy area finding problems:
the area of the grey-shaded parallelogram AKCL in the fig.1) below.
Consider that: a) ABCD is a square with 3 cm side length; b) KD =
find the area of the polygon in fig.2). Consider that: a) AB = AD
= 3 cm; b) DC - BC = 1 cm.
have to use the shortest way to resolve these problems, a formula
with more than 2 terms (binomial) is not acceptable. Have I forgotten
something? ah …MERRY CHRISTMAS and HAPPY NEW YEAR!!!
this page and try to solve these puzzles
©96-98, Sarcone & Waeber, Lausanne
= 6 cm2;
x 3) - 1/4 = 8 3/4 cm2;
the formula is: AB=AD=c; BC=a; DC=b; |a-b|=n;
(c - n/2)(c + n/2) = c2 - (n/2)2
details? feel free to contact us!