Question

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 1

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

double it

answer: 60 x 60