Answer:
4.5 ft
Step-by-step explanation:
18 inches = 1.5 ft

Volume of triangular prism = Base Area x Length
Hope this helps
Answer: the answer is not in the multiple choice.
area = 60 in^2
Step-by-step explanation:
X^2-6x+7=0
-b +/- sqrt b^2-4ac all over 2a
a=1 b= -6 and c=7
6+/- sqrt 36-4×1×7 all over 2×1
6+/- sqrt 8 all over 2
6+/- 2sqrt2 all over 2
reduce
3+/- sqrrt2