Take out HW from last night. Take out HW from last night. Text p. 379, #1-6 Text p. 379, #1-6 Copy HW in your planner. Copy HW in your planner. Text p. 390, #1-10 all Text p. 390, #1-10 all Complete the “Hands-On Lab Use Nets to Build Prisms and Cylinders” activity on page 386 in your textbook. Do Now 5/9/13

“Net Activity” Complete the “Hands-On Lab Use Nets to Build Prisms and Cylinders” activity on page 386 in your textbook. Be sure to follow the directions exactly or your nets will not fit on the graph paper. Graph paper, tape, and scissors are on the shelf. Be sure to be neat and clean up all of your scraps when you have finished.

Text p. 379, #1-6 Homework Text p. 379, #1-6 1) D 2) circle 3) square 4) cylinder 5) cylinder 6)

Objective SWBAT find the surface area of a prisms and cylinders

A NET is a pattern that can be folded to form a solid object like a prism or a pyramid. A NET is a pattern that can be folded to form a solid object like a prism or a pyramid. 4 in. 2 in. 10 in. 2 in. 4 in.

Section 9.6 “Surface Area of Prisms and Cylinders” Surface Area- the sum of the areas of all the faces of a polyhedron or solid figure. **HINT** To calculate surface area of a figure, think of the net of the figure and how many faces make up the figure. Find the area of each face, and then add them all up! and then add them all up!

10 cm 5 cm Find the surface area of the rectangular prism. Find the area of each face, and then add them all up! and then add them all up!

5 cm 10 cm Surface Area- the sum of the areas of all the faces of a polyhedron or solid figure. 2 x (5)(5) + 4 x (5)(10) Surface Area = = 250cm² 25 50

10 cm 8 cm 15 cm Find the surface area of this triangular prism. 3 cm

10cm 8cm 15cm Surface Area = Triangle base = 12 Triangle base = 12 Left face= 150 Left face= 150 Right face= 150 Right face= 150 Bottom= 120 Bottom= 120 Surface Area = 444cm² Surface Area- the sum of the areas of all the faces of a polyhedron or solid figure cm 15cm15cm 3cm

Find the surface area of the prisms. = 126 The surface area of the prism is 606 in 2. The surface area of the prism is 150 in 2. Front & back = 2 (9 x 7) Top & bottom = 2 (7 x 15) Left & right = 2 (9 x 15) = 210 = 270 = 56Front = (8 x 7) Top & bottom = 2(½ x 8 x 3) Left & right = 2 (5 x 7) = 24 = 70

Surface Area- the sum of the areas of the circular bases and the lateral surface. Circular basesLateral surface

A NET is a pattern that can be folded to form a solid object like a prism or a pyramid. A NET is a pattern that can be folded to form a solid object like a prism or a pyramid. Circular base Lateral surface Circular base

2 in 4 in Find the surface area of a cylinder. Surface Area = Area of rectangle + 2 x Area of circle

16 in 22 in Find the surface area of a cylinder. Surface Area = Area of rectangle + 2 x Area of circle

Text p. 390, #1-11 all Homework Text p. 390, #1-11 all