Question

determine a area total e o volume de um paralelepipedo de dimensoes 20m,8m,6m.

Answer 1

Boa tarde Ellen

a = 20 m
b =   8 m
c =   6 m

área total

At = 2*(ab + ac + bc)
At = 2*(20*8 + 20*6 + 8*6)
At = 2*(160 + 120 + 48)
At = 320 + 240 + 96 = 656 m² 

Volume

V = a*b*c = 20*8*6 = 960 m³ 

Answer 2

Volume  
V = 20 m x 8 m x 6 m =  960 m³

At = 2(20x8) + 2(20 x6) + 2 (8 x 6) =

At = 320 + 240 + 96

At = 656 m²