Answer:
896
Step-by-step explanation:
Cube:
8 x 8 = 64
64 x 13 = 832
Pyramid:
64 x 3 = 192
192 / 3 = 64
_____________________
Cube + Pyramid:
832 + 64 = 896
-4
A
volume = 840 cubic cm
(3.2/100)×840= 26.88 per day
after 4 days = 26.88×4=107.5
answer is 107.5