Volumes of Rectangular Prisms and Cylinders

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Volumes of Rectangular Prisms and Cylinders COURSE 2 LESSON 8-9 Find the volume of the cylinder. Round to the nearest cubic centimeter. Use the formula. V = r 2h = ( )(2)2(9) Substitute. 113.09724 Use a calculator. The volume of the cylinder is about 113 cm3. 8-9

Volumes of Rectangular Prisms and Cylinders COURSE 2 LESSON 8-9 A glass is 7.4 cm tall. The base of the glass has a diameter of 2.2 cm. Estimate the volume that the glass can hold if it is filled to the top. Then find the volume to the nearest cubic unit that the glass can hold if it is filled to the top. Use 3 to estimate . = (3)(1.1)2(7.4) 29.6 Use the formula. Estimate: = 4(7.4) Use 4 to estimate 3.63 (3 • 1.21). V = r 2h The estimated volume is 29.6 cm3. Actual volume: V = ( )(1.1)2(7.4) 28.129821 The actual volume is about 28 cm3. 8-9

Volumes of Rectangular Prisms and Cylinders COURSE 2 LESSON 8-9 Find the volume of each figure to the nearest cubic unit. 1. 2. 2,304 ft3 8,743 cm3 8-9