can someone help me asap?!! it’s surface area

Answer:
189 yd²
Step-by-step explanation:
Should be easy enough: Assume it's a rectangle solid and divide by 2.
Answer:
l = 15 yd
w = 3 yd
h = 8 yd
d = 17.2627 yd
S = 378 yd² divide by 2 = 189 yd²
V = 360 yd³
Agenda:
l = length
w = width
h = height
d = diagonal
S = surface area
V = volume