Answer:
339.42m
Step-by-step explanation:
Circumference of a circle=2x22/7x54
=339.42m
Do 18x18 which equals 324
To start, the first thing you need to know is that when you add decimals, you must line the decimal up, meaning, if you were adding 2.7+4.1, you have to make sure 2 is lined up with 4, and 7 is lined up with 1 so that the decimals align. Then, you add straight down from right to left and you get 6.8 as your answer.