2. Surface Area of a Cylinder h A cylinder is a prism with a circular cross-section. 2r2r

3. Surface Area of a Cylinder A cylinder is a prism with a circular cross- section. r2r2 r2r2  Removing top and bottom Open out 2  r h Surface Area = 2  r 2 + 2  rh

4. 6 cm Calculate the surface area of the following cylinders. 15 cm 2.1mm 9.2 mm 3 cm 2 cm 1 2 3 SA = 2 x  x 3 2 + 2 x  x 3 x 6 = 169.6 cm 2 SA = 2 x  x 2 2 + 2 x  x 2 x 15 = 213.6 m 2 SA = 2 x  x 4.6 2 + 2 x  x 4.6 x 2.1 = 193.6 mm 2 Surface area = 2  r 2 +2  rh