Bak mandi berbentuk kubus memiliki V=r^3. Karena hanya separuh saja berarti V=(1/2)×r^3=(1/2)×(13)^3=(1/2)×2197=1098,5 dm^3
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maka :
volume air
=(1/2)(rusuk^3)
=(1/2)(13^3)
=1098.5 dm^3
Bak mandi berbentuk kubus memiliki V=r^3. Karena hanya separuh saja berarti V=(1/2)×r^3=(1/2)×(13)^3=(1/2)×2197=1098,5 dm^3