Answer :
The surface area of a prism = 2 x area of base + perimeter of base x H
So
Surface area =
2 x ( 9x3) + (9+3+9+3) x 15
= 2 x 27 + 24 x 15
= 54 + 360
= 414
So the surface area would be [tex]\boxed{\bf{414}}[/tex]
So
Surface area =
2 x ( 9x3) + (9+3+9+3) x 15
= 2 x 27 + 24 x 15
= 54 + 360
= 414
So the surface area would be [tex]\boxed{\bf{414}}[/tex]
