Answer:
D
Step-by-step explanation:
x²=4
x=√4
X1=2
X2=-2
Euler's formula for a polyhedron is given by:

Make E, the subject of the formula:

Put F = 20, V = 12, to obtain E,

Therefore, there are 30 edges
Im not sure if you need to find the area or de expression of how to find the AREA. but what you do if explain how you can find it by multiplying that will be 4.. and then also 4? Im not sure but you can try
There’s 0.4 in a second then in 24 seconds then you would multiply 0.4x24= which is
9.6 gallons of water.