Answer:
In terms of pi: 243
in decimal form: 763.407
Step-by-step explanation:
to find surface area of a hemisphere the formula is,

diameter (d) = 18
radius = d / 2 = 18 / 2
radius = 9

The correct answer is 10/7 or 1 3/7. Hope this helps.
10 equal parts. that is the answer
2.23606797749979
or round it to 2.2
16%. You divide those two numbers and then multiply the answer by 100