You are making poster board boundary markers in the shape of square pyramids for a relay race. If you are including a ten -inch square as the bottom and you want the slant height to be twelve inches, how much poster board do you need?

Question

anonymous · Answer

three hundred forty square inches
 three hundred sixty square inches
 three hundred eighty-four square inches
 four hundred square inches

anonymous · Answer

@LegendarySadist help

anonymous · Answer

In other words, we're finding the surface area of a square pyramid, right?

anonymous · Answer

here i think not sure but here is an image that may be that or not if it is not then yea your right sorry get confuse with shapeshttp ://learn.flvs.net/webdav/assessment_images/educator_math2/v9/07_TB_39_240.jpg

anonymous · Answer

http://learn.flvs.net/webdav/assessment_images/educator_math2/v9/07_TB_39_240.jpg

anonymous · Answer

I got a cookie error for the image /:

anonymous · Answer

really okay give me a second

anonymous · Answer

this is from a different test question but just to give an idea if that the shape we think it is

anonymous · Answer

Well anyways. With the info we have, we can put it into the formula $$\huge (a^{2})+(4*\frac{1}{2}*sh*a)$$ with a being the side of the square and sh being the slant height

anonymous · Answer

You there?

anonymous · Answer

yea just calculating and i also went to make coffee for my mom :D

anonymous · Answer

250 is that it

anonymous · Answer

What did you use for a and what did you use for sh?

anonymous · Answer

10 for the area and 12 for the slant height

anonymous · Answer

So $$\large 10^{2}=~?$$

anonymous · Answer

20

anonymous · Answer

100

anonymous · Answer

i am dummy its 100

anonymous · Answer

Ok yeah, 100. So $$\large 4*\frac{1}{2}*12*10=~?$$

anonymous · Answer

240 + 100 = 340

anonymous · Answer

Right! So 340 is gonna be our answer :)

anonymous · Answer

yay thank you so much i keep that formula in mind

anonymous · Answer

$$\huge \color{aqua}N\color{fuchsia}o \space \color{lime}P \color{orange}r \color{blue}o \color{maroon}b \color{red}l \color{olive}e \color{purple}m \ddot\smile $$

anonymous · Answer

cool how did you do that

anonymous · Answer

Latex writing, see the code-like writing in my bio?

anonymous · Answer

cool okay thanks for the help