Question

Figure

What is the surface area of this figure?
157 in2



376.8 in2

140 in2

233 in2

Answer 1

The surface area of a cylinder formula is\[SA=2\pi r h+2\pi r ^{2}\]Your height is 7 and your radius is 5.\[SA=2\pi (5)(7)+2\pi (5)^{2}\]Doing the math gives you \[SA=2\pi (35)+2\pi (25)\]Simplifying that even further gives you\[SA=70\pi+50\pi \]Adding those together gives you 120pi. 120 times 3.14 = 376.8 in^2