From the points given we know that the rectangle is 3 points wide and 2 points tall. If we rotate it

around the x axis then we will receive the lying cyllinder which will be 3 points tall and 2 points wide (so its radius is 2/2 = 1 point). Now we can find the surface area of the cyllinder using appropriate formula:
Ax^2 + bx + c = 0
x^2 + x + 2 = 0
a = 1
b = 1
c = 2
b^2 - 4ac
1^2 - 4(1)(2)
= 1 - 8
= -7
The value of the discriminant is -7.
Answer:
3/2
Step-by-step explanation: