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04-07-2020
Mathematics

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what is the surface area of the prism shown to the left?

(idk the answer i guessed)

what is the surface area of the prism shown to the left idk the answer i guessed class=

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mhanifa mhanifa

04-07-2020

Answer:

828

Step-by-step explanation:

Missing leg of triangle:

√15²-12²= √225-144=√81=9

Triangle faces= 2*1/2*12*9= 108

Base= 20*9= 180

Front face= 20*15= 300

Back face= 20*12= 240

Total= 108+180+300+240= 828

Second choice

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