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97.8ft^2 but if you round it to the nearest 10 it will be 100ft^2
Answer:
28.26
Step-by-step explanation:
The formula for calculating diameter is π<em>d</em> (pi times the diameter), so 3.14 times 9 is 28.26.
You can group first two conjunctions and second two:
.
In first brackets you have common
and in second brackets common is 5:
.
