Question

There are 1.3 x 10^5 cells in a petri dish. Each cell is approximately 2.8 x 10^-6 m. how large are the cells combined

Answer 1

To answer this question, we have that:

1. There are 1.3 x 10⁵ cells in a petri dish.

2. Each cell is approximately 2.8 x 10^-6 m per cell.

Then, we need to multiply each number as follows:

`(1.3\cdot10^5\text{cells)}\cdot(2.8\cdot\frac{10^(-6)m}{\text{cell}})=1.3\cdot2.8\cdot10^5\cdot10^(-6)m=3.64\cdot10^(5-6)m=3.64\cdot10^(-1)m`

Therefore, we have that the cells combined are 3.64*10^-1 or

`3.64\cdot10^(-1)m`

(Option A.)