Question

Calculati aria unui trapez dreptunghic cu baza mica de 12 cm si baza mare de 2,4 dm si h de 8 cm

Answer 1

b=12cm
B=2,4dm=24cm
h=8cm
$A= \frac{(B+b)h}{2} = \frac{(24+12)\cdot 8}{2} = \frac{36\cdot8}{2} =144cm^2$