Solve.Sand is poured carefully into a pile that forms a right circular cone as shown. The total surface area of the cone with slant height s and base radius r is given by the polynomial S = ?r2 + ?rs. Find an equivalent expression for S by factoring out a common factor.
A. S = r(?r2 + ?s)
B. S = ?rs(r + 1)
C. S = ?r(?r + s)
D. S = ?r(r + s)
Answer: D
Mathematics
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