Answer:
Option (2) is correct.

Step-by-step explanation:
Given expression 
We have to find an equivalence value to the expression.
<u> Radical rule</u>,
Also,
Consider the given expression,

Applying radical rule to

Thus, the expression becomes,

Thus, option (2) is correct.
Answer:
the length is (1,3
Step-by-step explanation:
the length is 3,1
Answer:
28/25
Step-by-step explanation:
optionA is the ans
Answer:
Length of arc AB = 4π
Step-by-step explanation:
Formula to get the arc length is given by,
Length of arc = 
Here, θ = central angle subtended by the arc AB
r = Radius of the circle
By substituting the values in the formula,
Therefore, length of arc AB = 
= 40π