Answer:
Hence, area of concrete is: 165 ft^2.
Hence, option: A is the correct answer.
Explanation:
We have to find the total area of the concrete.
The area of concrete is given by:
Area of rectangle ( with dimensions 25 ft × 13 ft. )- Area of rectangle ( with dimensions 20 ft. × 8 ft. )
Hence,
Area of rectangle with dimensions 25 ft × 13 ft. is
25×13=325 ft^2.
Also area of rectangle with dimensions 20 ft. × 8 ft. is:
20×8=160 ft^2.
Hence, area of concrete is calculated as:
325 ft^2-160 ft^2=165 ft^2.
Hence, option: A is the correct answer.
Hence, area of concrete is: 165 ft^2.