Given
Dimensions of deck = 24 by 24
dimensions of ply wood = 4 by 8
Find
Number of sheets of ply wood needed to cover the deck
Step-by-step explanation
number of sheets = area of deck divided by area of 1 ply wood
so ,
area of deck =

and
area of ply wood =

so ,
number of sheets needed =

Final Answer
Hence , the required number of sheets of ply wood is 18