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 HELP WITH A HARD QUESTION!!!!!!! PLZ HELP!!!

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Each floor of a square building has an area of 8.1 × 10^5 square feet.

 

What is the length of each side of the floor?

 

________ feet

 

If the building has 15 stories, each with the same floor area, what is the total area of all of the floors? Enter the total area in scientific notation.

 

_________ square feet

 Dec 12, 2016

Best Answer 

 #1
avatar+118609 
+5

Square root of 8.1x10^5

= sqrt (8.1×10×10^4)

=sqrt (81×10^4)

=9×10^2

=900 feet

 

Area=15×8.1×10^5

Area=121.5×10^5

Area=1.215×10^7  feet squared

 Dec 12, 2016

1+0 Answers

 #1
avatar+118609 
+5
Best Answer

Square root of 8.1x10^5

= sqrt (8.1×10×10^4)

=sqrt (81×10^4)

=9×10^2

=900 feet

 

Area=15×8.1×10^5

Area=121.5×10^5

Area=1.215×10^7  feet squared

Melody Dec 12, 2016

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