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Find the value of (0.006)3 + (0.004)3 in standard form

Find the value of (0.006)3 + (0.004)3 in standard form
  • A.
    2.8 x 10-9
  • B.
    2.8 x 10-7
  • C.
    2.8 x 10-8
  • D.
    2.8 x 10-6
Correct Answer: Option B
Explanation

(0.006)3 + (0.004)3 = 2.16 x 10-7
(2.16 + 0.64) x 10-7
= 2.8 x 10-7