The surface area of the figure with a diameter of 6cm and height of 25cm is 84π square cm
The total surface area of a cylinder
The formula for calculating the TSA of a cylinder is expressed as:
S = 2πr(r+h)
Since the figure is half of a cylinder, hence;
S = πr(r+h)
Given the following
r = 6/2 = 3cm
h = 25cm
Substitute
S = π(3)(3+25)
S = 84π square cm
Hence the surface area of the figure below is 84π square cm
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