Good idea to look up the formula for "surface area of a sphere" and to write it down for later reference. It is A=4 pi r^2, where r is the radius of the sphere.
If the given sphere has a diameter of 7 cm, what is the radius of this sphere?
Write your answer inside the parentheses, below:
Sphere surface area = 4 pi (r)^2, or (in this case), A = 4(3.14)( )^2
Given:
T (-3,4) ; O (-4,1) ; Y (-2,3)
T'(-1,1) ;
T
-3 move forward 2 points to reach -1
4 move forward 3 points to reach 1
O
-4 move forward 2 points to reach -2
1 move forward 3 points to reach -2
Y
-2 move forward 2 points to reach 0
3 move forward 3 points to reach 0.
O'(-2,-2) ; Y'(0,0) 1st option.
and 
. Then
, so that 
. We have
