I'm a new student to complex maths & I'm after the formula to calculate the exterior surface area of the prism - see attached diagram.(adsbygoogle = window.adsbygoogle || []).push({});

I know formula for a surface area of triangular prism = ab + ph and cylinder = 2pir^2 + 2 pi rh. Don't know where/how to apply formula to half of these.

Thanks for your assistance.

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# Ext Surface of Prism

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