Answer:
283 square inches
Step-by-step explanation:
Stacking 8 plates with height of each being 0.5 inch will form a cylinder with height 4 inches.
The radius of the cylinder is half the diameter
[tex]r = \frac{10}{2} = 5in[/tex]
The total surface area of this cylinder is:
[tex] = 2\pi \: r(r + h)[/tex]
We substitute the values to get:
[tex] = 2 \times \pi \: \times 5(5+ 4) \\ = 10 \times 9\pi \\ = 90\pi \\ = 282.6 {in}^{2} [/tex]
She will need approximately 283 square inches of wrapping
