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Help me please im in a rush

Help me please im in a rush-example-1
User Pferrel
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Answer: 390 m².

Explanation:


Surface \ area = 11*13+11*12+11*5+2*(12*5)/(2)=11*(13+12)+11*5+12*5=\\ =11*25+5*(11+12)=275+5*23=275+115=390\ (m^2).

User JQueeny
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