The volume of the granite piece in Cm³ is 12.2 cm³
calculation
volume of granite = (volume of cylinder after placing granite - volume of cylinder before placing granite
= 37.2 ml - 25.0 ml = 12.2 ml
convert ml to Cm³
that is 1 ml = 1 cm³
12.2 ml = ? cm³
by cross multiplication
=(12.2 ml x 1 cm³) / 1 ml = 12.2 cm³
