Answer: 160 sq. feet
Step-by-step explanation:
Given: Dimension of rectangular pool :
Length = 20 feet
width = 15 feet
Area of rectangular pool = length x width
= 20 feet × 15 feet
= 300 sq. feet
Now, Length of deck = 20 feet + 4 feet+ 4 feet (For both sides)
= 28 feet
width of deck = 15 feet + 4 feet+ 4 feet = 23 feet
Area of deck including pool = 20 feet × 23 feet
= 460 sq. feet
Area of deck = (Area of deck including pool ) -(Area of rectangular pool)
= 460 - 300 sq. feet
= 160 sq. feet
Hence, the area of the surface of the deck= 160 sq. feet
