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Question

Peter wants to carpet a square room of area 169 square feet. The length of the side of the room is .

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Solution

Given:–––––––
Area of the square room =169 square feet.

Need to Find:–––––––––––––––
Length of the side of the room

Let the length of the side of the square room =l

Hence,
Area of the square room =l2

169 square feet=l2

l2=169 square feet

l=169 square feet

Now, as we know that 169=13×13=132169=132=(132)12=132×12((am)n=am×n)=131=13

l=169 square feet=13 feet

Therefore, the length of the side of the square room is 13feet––––––.

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