Volume of cylinder: V = π r² h
Water in the cylindrical tin = quarter full or 1/4 of the volume of the the tin
π = 3.14
radius = 7 cm
height = 20 cm
Equation: Volume of Water = 1/4 (π r² h)
= 1/4 (3.14 x 7² x 20)
= 1/4 (3.14 x 49 x 20)
= 1/4 (3,077.20)
= 769.3 cubic cm.