Answer:
y = 49 - x
Step-by-step explanation:
Let the other number be y.
Given x + y = 49
x+y-x = 49 - x
y = 49 - x
Find the area of the base
.
Multiply area of the base by height to get volume

Hope this helps.
The volume of a sphere with a surface area of 100 ft is 94.03 :)