Answer:
A = 119 units²
Step-by-step explanation:
side of square is (12√2)sin45 = 12
The portion of the diagonal that is NOT octagon is
12√2 - 12
There are four corner triangles. The sum of their areas is
(12√2 - 12)²
Area of the octagon is area of the square minus four corner triangle areas.
A = 12² - (12√2 - 12)²
A = 119.2935...
Answer:
15
Step-by-step explanation:
Take x as how many pounds you need for the 6000 square feet
7 pounds x pounds
--------------- -----------------------
2800 square feet 6000 square feet
7*6000=42000
42000/2800=15
or you could find how many pounds you would need for 1 square feet.
7 pounds .0025 ponds
---------------- -----------------------
2800 square feet 1 square feet
and then you could just multiply .0025 and 6000
so = 15