-
Problem 14: The playground has an area of 45 ft × 75 ft = 3375 sq ft. Dividing by 500 sq ft per square gives 3375 ÷ 500 = 6.75. You can make 6 full squares of 500 sq ft each, with 0.75 × 500 = 375 sq ft of space left over.
-
Problem 15: For a square with an area of 81 cm², the side length is the square root of the area: √81 = 9 cm. Each side is 9 centimetres long.
-
Problem 16: With 36 meters of fencing (perimeter), the largest rectangular area is achieved when the rectangle is a square. Each side would be 36 ÷ 4 = 9 meters. The maximum area is 9 m × 9 m = 81 m². A square maximizes area for a given perimeter among rectangles.
-
Problem 17: Li Jun’s garden is 10 ft × 18 ft = 180 sq ft. Four seed packets require 4 × 50 sq ft = 200 sq ft. Since 180 sq ft < 200 sq ft, the garden does not have enough space for 4 seed packets.
Parent Tip: Review the logic above to help your child master the concept of area word problem worksheet.
