Question

Intr-un trapez se B=20cm,b=12cm,h=11cm aria trapezului este

Answer 1

A=[(B+b)x H] :2=>(32x11) :2=352 :2=176

Answer 2

$A = \frac{(B+b)*h}{2} \\ \\ A = \frac{(20+12)*11}{2} \\ \\ A= \frac{32*11}{2} \\ \\ A=176 cm^{2}$