Question

Each square on Olivia's chessboard is 11 square centimeters a chessboard has 8 squares on each side yo the nearest tenth what is the width of Olivia's chessboard?

Answer 1

$Area\ of\ square:\\a-width\ of\ small\ square\\\\A=a^2\\11=a^2\\a=\sqrt{11}\\\\8a-width\ of\ chessboard\\\\8a=8\sqrt{11}=26,53cm\\\\Olivia's\ chessboard\ has\ 26,53cm\ width.$