The surface area of a cone can be found using the formula:
Surface Area = πr(r + l)
where r is the radius of the base and l is the slant height.
Given the radius is 5 cm and slant height is 10 cm, we have:
Surface Area = π(5)(5 + 10)
Surface Area = π(5)(15)
Surface Area = 75π
Therefore, the surface area of the cone is 75π square cm.
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