GEOMETRY HELP Find the volume of a square pyramid with base edges 15 cm and height 22 cm. Because the base is a square, B = 15 15 = 225. V = BhUse the.

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GEOMETRY HELP Find the volume of a square pyramid with base edges 15 cm and height 22 cm. Because the base is a square, B = = 225. V = BhUse the formula for volume of a pyramid = (225)(22)Substitute 225 for B and 22 for h = 1650Simplify. The volume of the square pyramid is 1650 cm 3. Quick Check Volumes of Pyramids and Cones LESSON 11-5 Additional Examples

GEOMETRY HELP Find the volume of a square pyramid with base edges 16 m and slant height 17 m. The altitude of a right square pyramid intersects the base at the center of the square. Volumes of Pyramids and Cones LESSON 11-5 Additional Examples

GEOMETRY HELP Because each side of the square base is 16 m, the leg of the right triangle along the base is 8 m, as shown below. Step 1: Find the height of the pyramid = 8 2  h 2 Use the Pythagorean Theorem. 289 = 64  h 2 Simplify. 225 = h 2 Subtract 64 from each side. h = 15Find the square root of each side. (continued) Volumes of Pyramids and Cones LESSON 11-5 Additional Examples

GEOMETRY HELP Step 2: Find the volume of the pyramid. = 1280Simplify. The volume of the square pyramid is 1280 m 3. V = BhUse the formula for the volume of a pyramid = (16  16)15Substitute (continued) Volumes of Pyramids and Cones LESSON 11-5 Additional Examples Quick Check

GEOMETRY HELP Find the volume of the cone below in terms of. r = d = 3 in V = r 2 hUse the formula for volume of a cone = (3 2 )(11)Substitute 3 for r and 11 for h = 33Simplify. The volume of the cone is 33 in. 3. Volumes of Pyramids and Cones LESSON 11-5 Additional Examples Quick Check

GEOMETRY HELP An ice cream cone is 7 cm tall and 4 cm in diameter. About how much ice cream can fit entirely inside the cone? Find the volume to the nearest whole number. r = = 2 d2d2 V = r 2 hUse the formula for the volume of a cone V = (2 2 )(7)Substitute 2 for r and 7 for h About 29 cm 3 of ice cream can fit entirely inside the cone. Volumes of Pyramids and Cones LESSON 11-5 Additional Examples Quick Check Use a calculator.