Question

quero urgente a rost dessas prgsts!!!!!!

Answer 1

$8)area \: do \: triangulo \: = \frac{b \times h}{2} = \frac{12 \times 6}{2} = \frac{72}{2} = 36 \\ logo \: alternativa \: correta \: letra \: (a) = 36 \\ \\ 9)area \: de \: um \: trapezio = \frac{(8 + 4).12}{2} = \frac{12 \times 12}{2} = \frac{144}{2} = 72$