The surface area of a pyramid

12 questions

1. The net of a cylinder is made from two congruent circles and a ___.
2. A cylindrical tube is cut and unfolded into a rectangle. Find the values of a and b on the lengths of the rectangle.
3. Which formula gives the surface area of the curved surface of a cylinder of radius r and height h?
4. Find the surface area of a cylinder with radius 6 cm and height 9 cm. Give your answer correct to 3 significant figures.
5. A cylinder has a radius of 3 m and a height of 6 m. The surface area of the cylinder, in terms of \pi, is ___\pim².
6. The surface area of this cylinder is 120π cm². The length of marked x is ___ cm.
7. Which of these 3D shapes is a pyramid?
8. Which of these shapes are polyhedrons?
9. Jun describes a 3D shape. Jun says, "My shape has an apex that is directly above a vertex of its square base. All the faces other than the base are triangles." What is Jun's shape?
10. The diagram shows a pyramid and its net. Match each length marked on the net to the correct measurement on the pyramid.
11. The diagram shows a pyramid and its net. The surface area of the pyramid is ___ m². Do not round your answer.
12. The surface area of this pyramid is ___ cm².

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