Question

Your friend finds the surface area of the cylinder. Is your friend correct? Explain your reasoning

Answer 1

Hint:

The surface area of the cylinder $=2{\mathrm{\pi r}}^2+2\mathrm{\pi rh}$

Surface area $=2\times 3.14\times 5\times 5+2\times 3.14\times 5\times 10.6$

Surface area $=157+332.84$

Surface area $=489.84sq.yds$

Hence No, my friend is not correct.