Answer:
624 square inches of cardboard were used to make the box.
Step-by-step explanation:
Slant height of the box = l = 20 inches
Side of the base of the box = s = 12 inch
Area of the base = 
Area of triangular face = 
There are 4 triangle faces, and single square base , so the total area is :



624 square inches of cardboard were used to make the box.
It would be -5.6, 3 9/10, square root of 21 and then 5.2.
-5.6 is a negative, the square root of 21 is about 4.6, 3 9/10 is equal to 3.9 and 5.2 is the greatest out of them all.
Answer:
Jean-Jacques Rousseau
Step-by-step explanation:
This is not a math question so there is nothing to put here.
Answer:
5ab + 8 - 1a^2.
Step-by-step explanation:
Combining like terms, we get 3a^2 - 4a^2 = -1a^2. We get 9ab - 4ab = 5ab. Then we get, 5 + 3 = 8. Together this is 5ab + 8 - 1a^2