Question

A single Rhinovirus is 2 × 10-8 meters long, and a single E. coli bacterium is 2 × 10-6 meters long. How many times larger is an E. coli bacterium than a Rhinovirus?

Answer 1

Multiply it by using scientific notation then multiply 2X0.00000010 and compare it to the coil which is 2X0.000010

Answer 2

E coli bacterium is 200times larger than Rhinovirus

Explanation:

Length of a single Rhinovirus is 2×10^-8m

Length of E coli bacterium is 2×10^-6m

This shows that E coli is larger than Rhinovirus.

To determine the number of times the E. coli bacterium is larger than a Rhinovirus, we will divide the length of E coli bacterium by that of single Rhinovirus to have:

2×10^-6/2×10^-8

= 2×10^(-6-(-8))

= 2×10^-6+8

= 2×10²

= 200

This shows that E coli bacterium is 200times larger than Rhinovirus