Surface Area of a Half Cylinder Calculator

Total Area (cm²):

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How to Calculate the Surface Area of a Half Cylinder

To calculate the surface area of a half cylinder, you need to know the diameter (d) and height (h). The formula for the surface area of a half cylinder is:

Surface Area = πrh + (πr²) + dh

where:

d is the diameter of the base
r is the radius of the base (r = d/2)
h is the height of the cylinder