anonymous
  • anonymous
What is the surface area of this square pyramid? A. 1080 m2 B. 360 m2 C. 504 m2 D. 414 m2
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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schrodinger
  • schrodinger
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anonymous
  • anonymous
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anonymous
  • anonymous
@taramgrant0543664
anonymous
  • anonymous
@Shirley27

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More answers

xapproachesinfinity
  • xapproachesinfinity
that pyramid has 4 triangles that are congruent meaning they the same area so 4(the area of one) area of one trianle is 1/2x15x12
xapproachesinfinity
  • xapproachesinfinity
add up that with the area of the base, which is a square area of a square = 12^2
xapproachesinfinity
  • xapproachesinfinity
that will give the surface area
xapproachesinfinity
  • xapproachesinfinity
did yo get it?
anonymous
  • anonymous
144??
xapproachesinfinity
  • xapproachesinfinity
Surface area = 1/2x15x12+12^2
anonymous
  • anonymous
12 *12 right
xapproachesinfinity
  • xapproachesinfinity
don't know i don't have a calculator haha
xapproachesinfinity
  • xapproachesinfinity
yes 144 =12^2
xapproachesinfinity
  • xapproachesinfinity
you still need to add 1/2 x 15 x12
xapproachesinfinity
  • xapproachesinfinity
144+90=?
anonymous
  • anonymous
got 162
xapproachesinfinity
  • xapproachesinfinity
hmm how?
xapproachesinfinity
  • xapproachesinfinity
1/2 15 12=90 90+144=234
anonymous
  • anonymous
\[15\times12\div \frac{ 1 }{ 2}=\]
anonymous
  • anonymous
+144
xapproachesinfinity
  • xapproachesinfinity
no the area of a triangle is 1/2 hxb
xapproachesinfinity
  • xapproachesinfinity
\(\frac{1}{2}hb\)
anonymous
  • anonymous
o srry got 234
xapproachesinfinity
  • xapproachesinfinity
ok now you are good!!
anonymous
  • anonymous
when i did it again
anonymous
  • anonymous
ok then what
xapproachesinfinity
  • xapproachesinfinity
that's all!!
xapproachesinfinity
  • xapproachesinfinity
oh hold we forgot to multiple 90 by 4
anonymous
  • anonymous
brb
xapproachesinfinity
  • xapproachesinfinity
because there are four triangle
xapproachesinfinity
  • xapproachesinfinity
so 360+144=?
xapproachesinfinity
  • xapproachesinfinity
that was blinder from me. i wrote above, i thought i did that already
xapproachesinfinity
  • xapproachesinfinity
So surface area =360+144=504 which matches one of your answers
xapproachesinfinity
  • xapproachesinfinity
you got it?
xapproachesinfinity
  • xapproachesinfinity
if you are confused say so
anonymous
  • anonymous
no i was doing sumpthin im back now
xapproachesinfinity
  • xapproachesinfinity
ok
anonymous
  • anonymous
thanks can u help with some more
xapproachesinfinity
  • xapproachesinfinity
I'm actually leaving to sleep!
anonymous
  • anonymous
o ok:(((
xapproachesinfinity
  • xapproachesinfinity
if you have a quick question n problem
anonymous
  • anonymous
ok

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