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Surface Area of a Cylinder

Surface Area of a Cylinder. By Mr. Martin. Overview. Behold! A can with a: Top (radius 3.75 cm) Bottom (same as top), and Label (11 cm high). Note: these are not the actual Measurements of the can. The Top. Formula for Area Circle? Area = Pi x r 2 Area= Pi x 3.75 2

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Surface Area of a Cylinder

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  1. Surface Area of a Cylinder By Mr. Martin

  2. Overview • Behold!A can with a: • Top (radius 3.75 cm) • Bottom (same as top), and • Label (11 cm high) Note: these are not the actual Measurements of the can.

  3. The Top • Formula for Area Circle? • Area = Pi x r2 • Area= Pi x 3.752 • Area=3.14 (14.0625) • Area=44.15625 sq cm Radius (r)

  4. The Bottom • Same as top • Area = Pi x r2 • Area= Pi x 3.752 • Area=3.14 (14.0625) • Area=44.15625 sq cm

  5. Height The Label • What shape? • rectangle • Formula for area? • Height x width • Height? • 11cm Width • Width? • Pi x Diameter • Area = 11(3.14)(7.5)= 259.05 sq cm

  6. Add Top, Bottom and Label • 44.15625 + 44.15625 + 259.05 = 347.3625 square cm Top Bottom

  7. Now you try: Radius = 5 cm Height = 12 cm Note: These are not the actual dimensions of the can.

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