3. Volumes of Spheres
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Surface Area: 486 square inches
Volume: 729 cubic inches.
V= 121.5
a/c* b = a* b/c
LHS * 3=RHS* 3
3 * a/3= a
Multiply
.LHS /4Ď€.=.RHS /4Ď€.
Cross out common factors
Simplify quotient
sqrt(LHS)=sqrt(RHS)
sqrt(a^3)=a
Rearrange equation
Use a calculator