Simplify (0.09)2 and give your answer correct to 4 significant figures

A.

0.81

B.

0.081

C.

0.0081

D.

8.0001

View answer & explanation

Correct answer is C

(0.09)2 = 0.09 × 0.09

= 0.0081

= 0.008100 to 4 significant figures

Please, start counting first from the non-zero digits i.e. 8

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