Surface area from a net: prisms and pyramids
Grade 7 Math Worksheet - Challenge Me
Circle the best answer, or write your answer on the line.
Ari's toy crate has no lid. It is 12 in long, 8 in wide and 4 in tall. Toys are waiting. How much paper covers its outside, in square inches?
Jun's gift box is 10 cm long, 5 cm wide and 4 cm tall. A label wraps around the four sides only. The band is red. What is the label's area in square cm?
Kira's lunch box is 7 in long, 2.5 in wide and 6 in tall. A label wraps around the four sides only. The stripe is purple. What is the label's area in square inches?
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Sketch, not to scale. A pyramid whose base is a right triangle with legs 6 cm and 8 cm and long side 10 cm. The tip is 2 cm straight up from the right-angle corner. Its three side faces are triangles: base 6 and height 2; base 8 and height 2; base 10 and height 5.2 (along the face).
Luz's pyramid tent is a triangular pyramid with a right-triangle base: legs 6 and 8 cm. The tip is 2 cm high. A flag waves. What is its surface area in square cm?
Milo's playhouse roof is a triangular pyramid with a right-triangle base: legs 9 and 12 cm. The tip is 3 cm high. A chimney peeks out. What is its surface area in square cm?
Pia paints the whole outside of a gift box: 12 in by 8 in by 5 in. It will look great. How much area does the paint cover, in square inches?
Zee wants to know how much a storage box holds. It is 9 in by 5 in by 4 in. Plenty of room. What is its volume in cubic inches?
Jun's toy block is a cube with edges of 5 in. Jun makes every edge 2 times as long. It is a giant now. What is its new surface area in square inches?
Kira's toy block is a cube with edges of 4 cm. Kira makes every edge 3 times as long. It has a golden star. What is its new surface area in square cm?
Luz's storage box is 9 in long, 6 in wide and 4 in tall. Luz makes the height half as tall. A bit squat. What is its new surface area in square inches?