Answer:
Option (2)
Step-by-step explanation:
Given expression is
÷ 
We further simplify this expression,
÷
= 
= 
= 
Therefore,
will be the quotient of the given expression.
and
for which the given expression is not defined.
Option (2) will be the answer.
C= 2pi
15= diameter. Radius= 15/2. R= 7.5
C= 2 times pi times 7.2
C=15 pi
C= 47.1
√(3*15)=√45=√[5*3^(2)]=3√5