Answer:
Total surface area is 94 ft^2
Now,
T.S.A = 2 ( lb + bh + lh )
= 2 ( 3*5 + 5*4 + 3*4 )
= 2 ( 15 + 20 + 12 )
= 2 * 47
= 94 Sq. ft
This is Right Answer.....
I hope you understand....
