Answer:
option- a
Step-by-step explanation:
the length of AB = A'B'
Surface area = 4 π r2 square units
y>=1*x+2
y>=k*x+n
we know that 2=k+n and 0=-2k+n
so 4=2k+n and 0=-2k+n
now 4=2n so n=2
now k=1
so y>=1*x+2