I'm not 100 percent sure but I don't think it has a direct variant.
Answer:

Step-by-step explanation:
Given that,
The dimensions of an aquarium are 61 cm long, 30.5 cm wide, and 30.5 cm high.
The tank is filled to 80% capacity with water.
We need to find the water needed for this tank.
The volume of cuboid is given by :

As it is filled to 80% capacity, so,

So,
of water is needed for this tank.
Add full rotations of 360° degree until the angle of between 0° and 360°.
Sec (60)
The exact value is sec (60) is 2
Answer:
c
Step-by-step explanation:
bc itysv coo;