If the total surface area of a right circular cone is $72 \pi$ square feet and a radius of the base is 6 feet long, find the slant height of the cone.
A) $4 \pi$ feet
B) $18$ feet
C) $6$ feet
D) $12$ feet
E) none of these

Question

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The Answer of If the total surface area of a right circular cone is $72 \pi$ square feet and a radius of the base is 6 feet long, find the slant height of the cone.
A) $4 \pi$ feet
B) $18$ feet
C) $6$ feet
D) $12$ feet
E) none of these

If the Total Surface Area of a Right Circular Cone 72π72 \pi72π

If the Total Surface Area of a Right Circular Cone $72 \pi$