07-06-2016
Mathematics

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Question 16 need help thank you

Question 16 need help thank you class=

Respuesta :

Julia42103 Julia42103

07-06-2016

You need to find the surface area of the rectangular prism and the triangular prism and add them up to find the answer.

Rectangular prism:
SA=2(lw+wh+lh)
SA=2(437.5+406.25+1137.5)
SA=2(1981.25)
SA=3962.5 sq cm

Triangular prism:
SA=2(1/2bh)+3(slanted height)*w
SA=2(235.75)+3(293.75)
SA=471.5+881.75
SA=1352.75 sq cm

3962.5+1352.75=5315.25 sq cm

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