Answer:
Wheres the picture?
Step-by-step explanation:

Step-by-step explanation:

We are given D = 16 ft, which means that r = (1/2)D = 8 ft. Therefore, the surface area of the sphere is

Do you mean 18? Because it would be 20 and 2. Otherwise I think it might be a really long decimal and I do not know what it is. Sorry.
<span>Yes, this is the exchange rate. If, for example, you wanted to compare the relative value for british pounds to US dollars, you would find the exchange rate online or on one of the business TV channels</span>