Homework Help Forum: 7th grade mathSuppose

Posted by DIANE on Sunday, November 1, 2009 at 7:57pm.

Suppose rectangles X and Y are similar. The dimensions of rectangle X are 5 centimeters by 7 centimeters. The area of rectangle Y is 140 square centimeters. What are the dimensions of rectangle Y?

• 7th grade mathSuppose - PsyDAG, Monday, November 2, 2009 at 12:02am

  The ratio of the sides = 5/7. The factors of 140 = 2 * 2 * 5 * 7 How can you combine those into just two factors (length and width) so their ratio = 5/7?

  
  

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