Difference between revisions of "1997 PMWC Problems/Problem I11"
| Line 14: | Line 14: | ||
<math>w=30</math> | <math>w=30</math> | ||
| + | |||
| + | <math>l=45</math> | ||
The perimeter of the big rectangle is | The perimeter of the big rectangle is | ||
| − | <math>2(w+l)+ | + | <math>2(w+l)+6w=330</math> |
Revision as of 18:38, 8 October 2007
Problem
A rectangle ABCD is made up of five small congruent rectangles as shown in the given figure. Find the perimeter, in cm, of ABCD if its area is 
.
Solution
Let l and w be the length, and width, respectively, of one of the little rectangles.
The perimeter of the big rectangle is
