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OpenStudy (rebeccapink6398):
please help <3 will medal+Fan !!!
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OpenStudy (rebeccapink6398):
OpenStudy (rebeccapink6398):
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OpenStudy (xapproachesinfinity):
the surface area is the addition of all sides areas
OpenStudy (rebeccapink6398):
okay thank you, can you help me with thisone?
OpenStudy (xapproachesinfinity):
you have two triangles with equal area
two rectangle with equal area
and the bottom
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OpenStudy (xapproachesinfinity):
so let's start with area of the triangle
=1/2 height times base
OpenStudy (xapproachesinfinity):
1/2 15 times 18
multiply that by 2 to get the area of two triangles
OpenStudy (rebeccapink6398):
wait. i understand that one. i got it. can you help me with this one?
OpenStudy (xapproachesinfinity):
now rectangle area
width times length
width= 15
length= 30
multiply that by 2 to get the area of two rectangles
OpenStudy (xapproachesinfinity):
well it is really the same idea that works with any other shape
find area of each side and sum up
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OpenStudy (xapproachesinfinity):
that pyramid has four equal triangle in area
+ the area of the base that's all
OpenStudy (xapproachesinfinity):
the base is a square
OpenStudy (xapproachesinfinity):
area of one triangle is
1/2 12 times 15
multiply that by 4
then add the area of the square base
OpenStudy (rebeccapink6398):
OH!! Thank you! I * all the sides and gto everythingy but it still didnt seem rigth so i did the base and i understand thank you!!!
OpenStudy (xapproachesinfinity):
alright glad to hear that :)
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