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What is the length of the side of the square that has the same area as a rectangle that has a length of 27 mm and a width of 15 mm? Round to the nearest tenth, if needed.

A.405 mm

B.80.5 mm

C.42 mm

D.20.1 mm

yurane  Apr 12, 2018
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Area of rectangle  = 15 * 27   = 405 mm^2

 

Area of square   =  side^2   .......so...

 

405 = side^2       take the square root of both sides

 

√405  =  side  ≈  20.1 mm

 

 

cool cool cool

CPhill  Apr 12, 2018

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