Find the volume of the right rectangular prism with a height of 3cm and a base of 21 cm2

To find the volume of a right rectangular prism, you multiply the base area by the height.

Base Area = 21 cm^2
Height = 3 cm

Volume = Base Area x Height
Volume = 21 cm^2 x 3 cm
Volume = 63 cm^3

Therefore, the volume of the right rectangular prism is 63 cm^3.