Bricks pyramid

How many 50cm x 32cm x 30cm brick needed to built a 272m x 272m x 278m pyramid?

Correct result:

n =  107122667


278 m=2780 dm=22×5×139 dm 272 m=2720 dm=25×5×17 dm  a=272 m h=278 m  x=50 cm m=50/100  m=0.5 m y=32 cm m=32/100  m=0.32 m z=40 cm m=40/100  m=0.4 m  V0=x y z=0.5 0.32 0.4=8125=0.064 m3 V=13 a2 h=13 2722 2786855850.6667 m3  n=V/V0=6855850.6667/0.064=107122667=1.071227108

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