Question

Two cells are viewed and measured under a microscope. The approximate diameter

of each cell is listed below.
• cell P: 5.0 x 10-4 meters
• cell Q: 3.0 x 10-6 meters
What is the approximate difference, in meters, between the diameter of cell P and
the diameter of cell Q?
A
B
c
D
2.0 x 10-5
2.0 x 10-4
4.7 x 10-5
4.7 x 10-4

Answer 1

option D. 4.7 x 10-4 m

Explanation:

The correct question is

• cell P: 5.0 x 10-4 meters

• cell Q: 3.0 x 10-5 meters

we have

The diameter of cell P is
`5*10^(-4)\ m`

The diameter of cell Q is
`3*10^(-5)\ m`

Rewrite the diameter of cell P as

`5*10^(-4)\ m=5*10^(-4)((10)/(10))=50*10^(-5)\ m`

Find the difference

`50*10^(-5)\ m-3*10^(-5)\ m=47*10^(-5)\ m`

Rewrite the difference as

`47*10^(-5)\ m=47*10^(-5)}((10)/(10))=4.7*10^(-4)\ m`