Four hundred eighteen thousandths.......................
I think I may be wrong check
5(x^2n-1)×(2x^3n-1) ^2
=20n3 x8 -20n2 x5 +20n x3 +20n x3 +5n x2-5
The decimals that represent the portions of the words that Tomas spelled correctly is 0.9 or 0.90.
The formula is
SA= pi (r)2 +pi (r) (h)
the SA is 13,188