Respostas

2014-08-12T14:40:45-03:00
A = B+b/2 *H = 15 + 7 / 2 * 9

Area = 99 m²

99 * 45 reais = 4455,00 reais.
2014-08-12T14:45:50-03:00

A =  \frac{( B + b). h}{2}  \\  \\ A =  \frac{(15 + 7) . 9}{2} \\  \\ A =  \frac{22 . 9}{2}  \\  \\ A =  \frac{198}{2}  \\  \\ A =  99  m^{2}  \\  \\


Preço = 99 . 45reais

preço = R$ 4455,00