Surface area of a cylinder = 2πrh+2πrsquared = 2x3.14x4.5x12+2x3.14x20.25 = 339.12+127.17 = 466.29 Therefore, the surface area of a cylinder is 466.29cm
To find the surface area of a cylinder you need to multiply its circumference by its height, plus the areas of the bases. So, multiply the circumference by the height and add the bases : (π4.5×2)12+(π4.5²×2)=466.52cm². Surface is the area of the outside part of 3D figure.
