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Cannon balls for an antique cannon are stacked next to it in four layers to form a square pyramid. How many cannon balls are in a pryimad
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Cannon balls for an antique cannon are stacked next to it in four layers to form a square pyramid. How many cannon balls are in a pryimad
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Jun 23, 2017
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Cannon balls for an antique cannon are stacked next to it in four layers to form a square pyramid. How many cannon balls are in a pryimad
Mathematics
middle-school
Manoj R
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Manoj R
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the amount of balls in a given layer can be found by squaring the layer it is in
4 layers
top layer (1st) is 1
2nd is 4
3rd layer is 9
4th is 16
add them up
1+4+9+16=30
30 in that pyramid
Joshua Galit
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Jun 30, 2017
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Joshua Galit
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