Question

The diameter of a healthy human red blood cell is about 0.007 millimeter. How is this number written in scientific notation?

(A) -7 X 10³
(B) 7 x 10‐³
(C) 7 X 10‐²
(D)7 X 10³​

Answer 1

(B) 7 x 10‐³

Explanation:

A typical red blood cell in human blood has a diameter of approximately 0.007 mm.

In scientific form = 7 x 10-^3

Answer 2

b is the correct answer.