Spencer has to gift wrap all the surfaces of the poster tube shown.

What is the area of the gift wrapping paper that Spencer will need?
a. 163.4 square inches
b. 113.1 square inches
c. 153.4 square inches
d. 138.3 square inches

Question

Spencer has to gift wrap all the surfaces of the poster tube shown. 
  
What is the area of the gift wrapping paper that Spencer will need?
a. 163.4 square inches
b. 113.1 square inches
c.  153.4 square inches
d.  138.3 square inches

anonymous · Answer

attachment

anonymous · Answer

Find the surface area. First of the the two circles and the cylindrical side

anonymous · Answer

We know the diameter is 4
that means the radius is 2 for the circles.

anonymous · Answer

$$r=2$$ for the two circles. We have enough information to find the area of the two circles. Do you know the formula for a circle?

anonymous · Answer

Yes

anonymous · Answer

Great can you tell me the area of a circle?

anonymous · Answer

pi(radius)^2

anonymous · Answer

great and since we know radius=2$$\pi r^2=\pi2^2$$

anonymous · Answer

May you just help me quickly with the answer please i'm taking a quiz @Romero

anonymous · Answer

ok that'll be 12.56

anonymous · Answer

Sorry man I can't give you the answer. Btw you are taking a quiz I think that might be considered cheating.....:/

anonymous · Answer

No i need help this is the ONLY question i don't understand @Romero that's why i'm following along with how you're helping me

anonymous · Answer

great multiply that by 2 because we have two circles.

anonymous · Answer

Next find the circumference and multiply it by 9.

2 *  pi  *  2  * 9 

and add them all up
and you are done

anonymous · Answer

that'll be 25.12

anonymous · Answer

so therefor the answer is d.