Surface Area Classwork

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Presentation transcript:

Surface Area Classwork Name:_________________________________________________________ DATE: ____/_____/_______ Surface Area Classwork 1. 2. 3. 4. 5. 6. 7. A cereal box is 7.4 in wide, 9.6 in high, and 2.5 in. deep. How many square inches of cardboard are needed to make this box? 8. An aluminum can of tomato juice is a cylinder with a radius of 7.5 cm. and a height of 20 cm. What is the minimum amount of aluminum required to create the can? 9. A steel oil tank is a cylinder with a diameter of 12 ft. and a height of 18 ft. How many square feet of steel were needed to make the tank? 20 in 8 in 3 in 13 in 15 in 22 mm 24 mm 35 m 7 m

Math-7 Practice/ QUIZ REVIEW “applying volume and surface area” NAME:________________________________________________________________________________DATE: ______/_______/_______ Scenario Answer Gary is pouring concrete into a rectangular mold. If the mold is 4 feet long, 2 feet tall, and 3.5 feet wide, how much concrete will the mold hold? How much tuna does a tuna fish can hold if its radius is 5 cm and its height is 3 cm? Hannah is wrapping a box-shaped present. It is 14 inches long, 7 inches wide, and 2.5 inches tall. How much wrapping paper will Hannah need? In order to fill a glass to the brim, how much tea will Larry have to pour if the diameter of the glass is 5 cm. and the height is 12 cm.? Mary keeps her swimming ribbons in a rectangular box that is 10 inches long, 2.5 inches wide, and 3 inches tall. If she decided to cover this box with fabric, how much fabric will she need? 6) A rectangular planter is 12.5 inches long, 8 inches wide, and 6 inches tall. How much dirt is required to fill the planter to the top? 7) A cylindrical piece of candy needs to be wrapped with paper. If the candy has a diameter of 2.4 cm and is 5 cm long, what is the minimum amount of paper required to cover it?

Scenario Answer What is the maximum amount of cereal that can fit in a cylindrical bowl if it is 8 inches in diameter and 4 inches tall? How much sand would be required to fill a sandbox that is 4 feet long, 3.5 feet wide, and 2 feet tall? A roll of toilet paper is wrapped in a paper wrapping (at the store). If the roll itself measures 4.4 inches across its circle base and is 4 inches in height, what is the minimum amount of paper needed to wrap it? Bob wants to fill a round jar up with M&M’s. How many cubic inches will the jar hold if it has a radius of 1.8 inches and a height of 8 inches? How many cubic inches of styrofoam “peanuts” can fit into an Amazon box if the box measures 11 inches long, 5 inches wide, and 4 inches tall?