If r is the radius of a sphere its surface area = 4(pi)r^2.
If the radius is doubled then its surface area = 4(pi)(2r)^2 = 4*4(pi)r^2.
So the surface area becomes 4-fold or the increase in surface area is 300%.
Answer:
1, 2, 8, 128, 32768
Step-by-step explanation:

Thus the first five terms are: 1, 2, 8, 128, 32768.
Answer:
40
Step-by-step explanation:
20 ÷ 1/2 = 20 * 2 = 40 half liters in 20 liters