(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 |

Publisher | : | - 1971 |

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