Mathematics
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OpenStudy (acespeedfighter):
Help l>
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jimthompson5910 (jim_thompson5910):
the base of the pyramid is a square that looks like this
|dw:1469497965699:dw|
what is the area of that square?
OpenStudy (acespeedfighter):
0.81
jimthompson5910 (jim_thompson5910):
correct
jimthompson5910 (jim_thompson5910):
each side panel looks like this triangle
|dw:1469498053632:dw|
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jimthompson5910 (jim_thompson5910):
|dw:1469498079873:dw|
OpenStudy (acespeedfighter):
I forgot how i find area to a triangle what is the formula?
jimthompson5910 (jim_thompson5910):
what is the area of one of the triangles?
jimthompson5910 (jim_thompson5910):
area of triangle = 0.5*base*height
jimthompson5910 (jim_thompson5910):
or
area of triangle = (1/2)*base*height
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OpenStudy (acespeedfighter):
3.6
OpenStudy (acespeedfighter):
3.6+0.81?
jimthompson5910 (jim_thompson5910):
you have to cut 3.6 in half to get 1.8
jimthompson5910 (jim_thompson5910):
area of one triangle = 1.8
area of 4 triangles = 7.2 (multiply 1.8 by 4)
OpenStudy (acespeedfighter):
7.2?
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jimthompson5910 (jim_thompson5910):
1.8 times 4 = 7.2
OpenStudy (acespeedfighter):
yep
jimthompson5910 (jim_thompson5910):
area of bottom square = 0.81
area of side panels combined = 7.2
add up the values to get the total surface area
OpenStudy (acespeedfighter):
A!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
jimthompson5910 (jim_thompson5910):
yep 8.01
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OpenStudy (acespeedfighter):
Thank you :) did you answer my question?
jimthompson5910 (jim_thompson5910):
yes 8.01 is the final answer, choice A like you said above
OpenStudy (acespeedfighter):
nope why are you level 99 but you dont have a ProfilePicture?
jimthompson5910 (jim_thompson5910):
oh, I haven't gotten around to it
OpenStudy (acespeedfighter):
hmm ok thx
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