Janine wants to paint just the sides of a cylindrical pottery vase that has a height of 45 cm and a diameter of 14 cm. To the nearest whole number, find the number of square centimeters she will need to paint. Explain the method you would use to find the lateral area.

Answer 1

The surface area of the side of a cylinder is
2πrh, in effect, the circumference of the circle times the height.
(Visualize taking a piece of paper and forming it into a cylinder.)

So for yours, the radius is 7 cm
surface area = 2π(7)(45) = appr 1979 cm^2

Answer 2

Thank you Reiny!