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A concert crew needs to set up some
chairs on the floor level. The chairs are to be placed in a square pattern
consisting of four square sections. If one of the square sections holds
chairs, how many chairs will there be along each length of the larger
square?

Answer :

the four sections would be 60 x 60 since 900 is 30 x 30

double it

answer: 60 x 60

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