Answer: I have no Idea how your teacher got 75.4 but if you go on goo gle and search "lateral area of a cone" there is a type of calculator thing at the top. Just type 2 where it says r - radius and 12 where it says h - height. The answer should be 76.4 so I'm assuming it's A.
Answer: (A)
Packing material is required to fill the box = 
Step-by-step explanation:
The box is shaped like a rectangular prism
base area = 9/10 square foot
height = 1/3 foot
Volume of a prism = base area X Height
=
Answer: 393.2 units²
<u>Step-by-step explanation:</u>
Since you know the length of two sides and the measure of the included angle, you can use the following trig formula:

Given: a = 24, b = 40, C = 55°

Answer:
24 gallons per minute
Step-by-step explanation:
Hope this helped!