Question

AYUDEMEN ES DE URGENCIA :( SI NO SABEN NO RESPONDAN >:v

Answer 1

Respuesta:

At = Ac + Ar + Ap + At

$at = ( {3}^{2} ) + (4 \times 1) + (4 \times 2) + ( \frac{(3 + 1)2}{2} ) \\ at = 9 + 4 + 8 + 4 \\ at = 9 + 8 + 8 \\ at = 25 \: cm^{2}$