How big is the base (area) of the washington monument in square feet? (hint
- make sure the 3d buildings is selected in the layers box, located in the lower
left of the screen. also, area is measured in square feet, so make sure you are
multiplying two measurements.)

"The whole 3D structure is in the shape of obelisk while the base is in square shape with a dimension of 55 feet that makes it base area of about 3025 square feet."

Explanation:

The Washington monument is an obelisk in the Washington, D. C. which was built in the honor of George Washington, who was the first president of the United States. It was made up of granite that has been faced with the Maryland marble. The monument is 55 feet (16.8m) square at the base and also 554 feet and 7 inches (169 m) high and weigh of about 91,000 tons etc.