The volume of the aquarium is calculated using the formula of rectangular prism volume
v = l × w × h
From the question, we know that
l = 0.75 yard
w = 1 yard
h = 0.5 yard
Input the numbers to the formula
v = l × w × h
v = 0.75 × 1 × 0.5
v = 0.75 × 0.5
v = 0.375
The volume of the aquarium is 0.375 cube yard