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Mathematics 7 Online
OpenStudy (anonymous):

I need help on a question... but please HELP me don't just do it for me..... The area of a certain rectangle is 288 yd squared. The perimeter is 68 yd.If you double the length and width, what will be the area and perimeter of the new rectangle?

jimthompson5910 (jim_thompson5910):

It helps to start off listing relevant formulas to use.

jimthompson5910 (jim_thompson5910):

What is the area of a rectangle formula? How about the perimeter formula?

OpenStudy (anonymous):

thanks i think i know how to figure it our now ok thanks

jimthompson5910 (jim_thompson5910):

ok tell me what you get

OpenStudy (anonymous):

When you change all the lengths of a figure by the factor m, the perimeter changes by that same factor m, and the area changes by the factor m squared.

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