The cross-section of a sphere is a circle . The area of a circle can be calculated by the formula A=
Where r is the radius of the circle.
Given :
Solving for r we have:

Or r= 10.
The area of a sphere is calculated by the formula :

Substituting r value we have:
SA= 
The total surface area of this sphere is 400π .
Simplify 9i(2+3i):
9i×2=18i
9i×3i=27i
18i+27i
Answer:
the answer is d!! I hope it helped please lmk if not
Answer:
y>0
all positive real numbers
Step-by-step explanation:
the range is the output values
this will always be greater than 0
Range : y>0