The basketball is a sphere of radius(r) 4.5 inches.
[tex]r=\frac{diameter}{2}=\frac{9}{2}=4.5\text{ inches}[/tex]By formula,
Area of a Sphere is given below:
[tex]\begin{gathered} A=4\pi r^2 \\ \text{Where A =area ; r=radius=4.5 inches} \\ \text{Substituting these values in the formula above, we get} \\ A=4\times\frac{22}{7}\times(4.5)^2=254.571\text{ }\approx\text{ 254.57 square inches} \end{gathered}[/tex]The exact material needed for each basketball is 254.57 square inches
b. The surface area of each box is a cuboid.
The surface Area of a cuboid is given by the formula below:
[tex]\begin{gathered} SA=2(lb+lh+bh) \\ \text{Where l=10 inches ; b=12 inches ; and h=10 inches ; SA = surface area} \\ SA=2\lbrack(10\times12)\text{ +(10}\times10)+(12\times10)\rbrack \\ SA=2(120+100+120) \\ SA=2\times340=680\text{ square inches} \end{gathered}[/tex]Thus, the square inches of cardboard needed for each box is 680 square inches.