(Solution Number l) In many problems a picture helps. Suppose the faces of the solar batteries look like this: 3 cm. x cm. solar battery for one camera battery for two cameras To solve this problem we must find out what the length of the side of anbsp;...
|Title||:||Secondary School Mathematics: chapt. 19. Problem solving. chapt. 20. Solution sets of mathematical sentences|
|Author||:||School Mathematics Study Group|