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Panjang TU = 10 cm, PQ = 15 cm, QU= 12 cm, dan PS = 9 cm. Luas permukaan prisma adalah ...

Panjang TU = 10 cm, PQ = 15 cm, QU = 12 cm, dan PS = 9 cm. Luas permukaan prisma adalah ...

  1. 1.500 space c m squared

  2. 1.350 space c m squared

  3. 900 space c m squared

  4. 750 space c m squared

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K. Putri

Master Teacher

Mahasiswa/Alumni Universitas Pendidikan Ganesha

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P T space equals space square root of T T apostrophe squared plus P T apostrophe squared end root space equals space square root of 12 squared plus 5 squared end root space equals space square root of 144 plus 25 end root  space space space space space space space equals space square root of 169 space equals space 13 space c m

L subscript S R V W end subscript space equals space L subscript P Q T U end subscript space equals space 1 half open parentheses P Q plus T U close parentheses cross times U Q space equals space 1 half open parentheses 10 plus 15 close parentheses cross times 12 space equals space 25 cross times 6 space equals space 150 space c m squared  L subscript R Q U V end subscript space equals space R Q cross times U Q space equals space 9 cross times 12 space equals space 108 space c m squared  L subscript T U V W end subscript space equals space T U cross times U V space equals space 10 cross times 9 space equals space 90 space c m squared  L subscript P Q R S end subscript space equals space P Q cross times Q R space equals space 15 cross times 9 space equals space 135 space c m space squared  L subscript P S T W end subscript space equals space P S cross times P T space equals space 9 cross times 13 space equals space 117 space c m squared

L p e r m u k a a n space p r i s m a equals space L subscript S R V W end subscript space plus space L subscript P Q T U end subscript space plus space L subscript R Q U V end subscript space plus space L subscript T U V W end subscript space plus space L subscript P Q R S end subscript space plus space L subscript P S T W end subscript  space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space equals space 150 space plus space 150 space plus space 108 space plus space 90 space plus space 135 space plus space 117 space equals space space 750 space c m squared

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