the area of the surface of this design is 31 in long
324pi=r^2pi=a
r=18, or the square root of 324
The easiest way to solve this problem is by calculating the areas of all the sides and adding them together.
<em>Step 1; Calculate the area of the rectangular front & back</em>
A = 2 * (l * w)
= 2 * (25 * 10)
<em>Step 2; Calculate the area of the rectangular sides </em>
A = 2 * (1 * w)
= 2 * (55 * 10)
= 1100 ft^2
Answer:
the answer is B. I hope this helps
