Answer:
the coordinates of the center of rotation is (4 , 3)
Step-by-step explanation:
*The line which passes through points (4 , 1) and (4 , 5) is vertical because the points have same x coordinates and its length is 5 - 1 = 4
*The line which passes through points (2 , 3) and (6 , 3) is horizontal because the points have same y coordinates and its length is 6 - 2 = 4
*These two lines intersect each other at their mid-point and this mid-point is the center of rotation
*The mid point is 
or
The answer is 17 and 9
Because 13-4=9 13+4=17
Answer:
Radius = 8 mm
Slant Height = 14 mm
Step-by-step explanation:
Base of a cone is a circle.
Area of circle is given as 
Where
is the radius.
Given that

Hence, radius is 8 mm.
Formula for Lateral Surface Area of a cone:

Where
is the radius and
is the slant height of cone
Given that 

Hence, slant height is 14 mm
I believe the answer is d.