Question

Calcule a área total alguem sabe

Answer 1

Explicação passo-a-passo:

$\sf A_{total}=2\cdot A_{base}+A_{lateral}$

$\sf A_{total}=2\cdot\dfrac{20^2\sqrt{3}}{4}+3\cdot20\cdot52$

$\sf A_{total}=2\cdot\dfrac{400\sqrt{3}}{4}+3120$

$\sf A_{total}=2\cdot100\sqrt{3}+3120$

$\sf A_{total}=200\sqrt{3}+3120$

$\sf \red{A_{total}=3120+200\sqrt{3}~cm^2}$

Letra C