D. 15:1
When you convert the 10 feet into inches the number will be 120 inches.
That’s 120:8
Divide by 8...
15:1
1 1/8 cups of oatmeal b/c 2 1/4 ÷ 2 = 1 1/8 ( one and one eighth)
What questions? You didn't write any?
For this case we have by definition, that the total surface area of a regular pyramid with a square base is given by:

Where:
p: It is the perimeter of the base
S: It's the inclination
It is the area of the base
Substituting:

ANswer:
Option B