 
<translate> Nkọwa: Buru ụzọ chọpụta ebe ụgbọ mmiri ahụ dị square: 5 inch * 8 inch = 40 square inch. Mgbe ahụ, chọpụta ebe ụgbọ epeepe nwere otu ogologo na ogologo dị ka ụgbọ epeepe nke mbụ nwere akụkụ atọ: sentimita atọ * sentimita anọ = sentimita iri na abụọ. Mgbe ahụ, kewaa ebe ahụ ụzọ abụọ iji chọpụta ebe ụgbọ mmiri ahụ dị n'ụdị triangle: 12 square inch / 2 = 6 square inch. Mgbe ahụ, chọpụta ebe ụgbọ epeepe nwere otu ogologo na ogologo dị ka ụgbọ epeepe nke abụọ nwere akụkụ atọ: 4 inch * 6 inch = 24 square inch. Mgbe ahụ, kewaa ebe ahụ ụzọ abụọ iji chọpụta ebe ụgbọ mmiri ahụ dị n'ụdị triangle dị: 24 square inch / 2 = 12 square inch. Mgbe ahụ, gbakọọ ebe ụgbọ mmiri nile na-efe iji chọpụta ọnụ ọgụgụ ákwà ahụ a chọrọ: 12 square inch + 6 square inch + 40 square inch = 58 square inch. <eng> Explanation: First find the area of the square sail: 5 inches * 8 inches = 40 square inches. Then find the area of a square sail with the same height and length as the first triangular sail: 3 inches * 4 inches = 12 square inches. Then divide the area in two to find the area of the triangular sail: 12 square inches / 2 = 6 square inches. Then find the area of a square sail with the same height and length as the second triangular sail: 4 inches * 6 inches = 24 square inches. Then divide the area in two to find the area of the triangular sail: 24 square inches / 2 = 12 square inches. Then add up the areas of all the sails to find the total amount of canvas needed: 12 square inches + 6 square inches + 40 square inches = 58 square inches. 