81. (9 to the power of 2 = 9 x 9).
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0.03 is the square power
The value of -3 to the second power is 9.
9 x 100 = 900
The value of 10 raised to the power of 9 (109) is 1,000,000,000 or one billion.
The value of 4 to the power of -2 is 0.0625