1 year ago

Help me please im in a rush

1 answer:

7 0

Answer: 390 m².

Step-by-step explanation:

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

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