A playground measures 36 meters in length and 21 meters in width. Flagpoles need to be installed all around the boundary, spaced 3 meters apart. How many flagpoles are required in total?

Explanation

The perimeter of the playground is calculated as 2 × (36 + 21) = 114 meters. Since flagpoles are placed every 3 meters along the boundary, the total number needed is 114 ÷ 3 = 38.