Answer:
[tex]20\ cameras[/tex]
Step-by-step explanation:
step 1
Find the total area of the store
[tex]A=130*60=7,800\ ft^{2}[/tex]
step 2
Divide the total area of the store by the area that cover one camera
[tex]\frac{7.800}{400} =19.5\ cameras[/tex]
Round up
[tex]19.5=20\ cameras[/tex]
Answer:
20 cameras.
Step-by-step explanation:
We have been given the dimensions of a store as [tex]130\text{ ft}\times 60\text{ ft}[/tex]. We are also told that each security camera covers 400 sq ft.
First of all, we will find the area of store by multiplying its dimension as:
[tex]\text{Area of the store}=130\text{ ft}\times 60\text{ ft}[/tex]
[tex]\text{Area of the store}=7800\text{ ft}^2[/tex]
To find the number of camera it will need to cover the whole store, we will divide the total area of store by the area covered by each camera.
[tex]\text{Cameras required to cover the whole store}=\frac{7800\text{ ft}^2}{400\text{ ft}^2}[/tex]\
[tex]\text{Cameras required to cover the whole store}=\frac{78}{4}[/tex]
[tex]\text{Cameras required to cover the whole store}=19.5[/tex]
Since we can not purchase 0.5 of a camera, so we will round up our answer.
[tex]\text{Cameras required to cover the whole store}=20[/tex]
Therefore, we need 20 cameras to cover the whole store.
