Question

Vic bedroom is 1.2 x 10² square feet. Vic knows that there are 2.3 x 10⁷ particles of dust per square foot. How many particles of dust are present in our bedroom?

Answer 1

2.76 x 10⁹

Step-by-step explanation:

Particles of dust per square foot = 2.3 x 10⁷

The size of Vic's bedroom = 1.2 x 10²

Therefore, the number of particles of dust present in the bedroom is:

`=2.3*10^7*1.2*10^2`

We simplify our result below.

`\begin{gathered} =2.3*1.2*10^7*10^2 \\ =2.76*10^(7+2) \\ =2.76*10^9 \end{gathered}`

There are 2.76 x 10⁹ dust particles.