John wants to know the volume of his gold ring in cubic centimeters. He gets a glass in the shape of a rectangular prism with a base 3\text{ cm}3 cm3, start text, space, c, m, end text by 2\text{ cm}2 cm2, start text, space, c, m, end text and fills the glass with 3.1\text{ cm}3.1 cm3, point, 1, start text, space, c, m, end text of water. John drops his gold ring in the glass and measures the new height of the water to be 3.7\text{ cm}3.7 cm3, point, 7, start text, space, c, m, end text.