Answer:

Step-by-step explanation:
<u>Step 1: Determine the area of the bottom rectangle</u>



<u>Step 2: Determine the area of the back rectangle</u>



<u>Step 3: Determine the area of the top rectangle</u>



<u>Step 4: Determine the area of the triangle</u>




<u>Step 5: Determine the surface area</u>


Answer: 
Answer:
121.36
Step-by-step explanation:
L times W times H
So to do this one, you have to do the problem backwards!
The equation looks like this with everything plugged in:
272.2 = 2(3.14)r
You are looking for r, so start dividing
272.2 = 2(3.14)r
136.1 = (3.14)r
43.3 = r
Therefore the radius is about 43.3 in.
I hope I helped!
Answer:
They are b and c.
Step-by-step explanation:
Let's simplify each expression:
a. b+2 (b+2b)
= b + 2b + 4b = 7b.
b. 3b + b = 4b.
c. 2(2b) = 2 * 2b = 4b.
Answer:
, 
Step-by-step explanation:
The velocity function of the projectile is obtained by deriving the position function:

Now, the velocities after 3 and 15 seconds are, respectively:



