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

First derisive the equation for C







Snsjdnsndnxnendndnfbdnxndjdnxjxhsbsbshxhxhdhd
3x - 15
less than or more than trick-------> the number before those words should be the second number in the equation