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SURFACE AREA Sue Feemster Texas Middle School Summer 2002.

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Presentation on theme: "SURFACE AREA Sue Feemster Texas Middle School Summer 2002."— Presentation transcript:

1 SURFACE AREA Sue Feemster Texas Middle School Summer 2002

2 SURFACE AREA Surface area is the sum of the areas of all the faces of a solid. Wrap it up!

3 Surface Area of a Rectangular Prism 5 cm 4 cm 10 cm

4 Surface Area of a Rectangular Prism 5 cm 4 cm 10 cm TOP FRONT SIDE

5 Surface Area of a Rectangular Prism 5 cm 4 cm 10 cm TOP FRONT SIDE Area of top and bottom A=LW A=10x4 = 40 x 2 = 80cm 2

6 Surface Area of a Rectangular Prism 5 cm 4 cm 10 cm TOP FRONT SIDE Area of top and bottom A=LW A=10x4 = 40 x 2 = 80cm 2 Area of front and back 10x5 = 50 x 2 = 100cm 2

7 Surface Area of a Rectangular Prism 5 cm 4 cm 10 cm TOP FRONT SIDE Area of top and bottom A=LW A=10x4 = 40 x 2 = 80cm 2 Area of front and back 10x5 = 50 x 2 = 100cm 2 Area of sides 4x5 = 20 x 2 = 40cm 2

8 Surface Area of a Rectangular Prism 5 cm 4 cm 10 cm TOP FRONT SIDE Area of top and bottom A=LW A=10x4 = 40 x 2 = 80cm 2 Area of sides 4x5 = 20 x 2 = 40cm 2 SURFACE AREA220cm 2 Area of front and back10x5 = 50 x 2 = 100cm

9 Find the surface area 21 cm 3 cm 5 cm Top and bottom Front and back Sides 21x3 = 63 x 2 = 126cm 2 21x5 = 105 x 2 = 210cm 2 3x5 = 15 x 2 = 30cm 2 SURFACE AREA ________ 366cm 2


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