Can Someone Please Help Me with some Geometry?? surface area of prisms and cylinders

Question

anonymous · Answer

find the surface area

anonymous · Answer

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anonymous · Answer

the first one is three rectangles and two right triangles. The only part that might not be straightforward is getting the sides of the largest rectangle. Use the Pythagorean theorem.

4^2+5^2=x^2

anonymous · Answer

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anonymous · Answer

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anonymous · Answer

2(20)+Ph

anonymous · Answer

what would the perimeter be for the first one??

anonymous · Answer

You need the perimeter of all the faces?

anonymous · Answer

the formula i have to use is 2B+Ph