John is asked to clean
a circular radioactive
area of radius T. If by
the end of each day
he cleans half the
area that he started
with on that day, how
much area would
have been cleaned
by the end of the
twentieth day?
19Tr2
20
39 Tr
40
2.
(219 – 1) Trở
219
(220 – 1) Tır?
220
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Please mark me as brilliantest
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please mark me as a brainliest
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