Question

Your store is 130 ft x 60 ft. The security cameras you are planning to purchase each cover 400 sq ft. You want to cover the whole store. How many cameras do you need? (Round up.)

Answer 1

Answer:

$20\ cameras$

Step-by-step explanation:

step 1

Find the total area of the store

$A=130*60=7,800\ ft^{2}$

step 2

Divide the total area of the store by the area that cover one camera

$\frac{7.800}{400} =19.5\ cameras$

Round up

$19.5=20\ cameras$

Answer 2

Answer:

20 cameras.

Step-by-step explanation:

We have been given the dimensions of a store as $130\text{ ft}\times 60\text{ ft}$. 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:

$\text{Area of the store}=130\text{ ft}\times 60\text{ ft}$

$\text{Area of the store}=7800\text{ ft}^2$

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.

$\text{Cameras required to cover the whole store}=\frac{7800\text{ ft}^2}{400\text{ ft}^2}$\

$\text{Cameras required to cover the whole store}=\frac{78}{4}$

$\text{Cameras required to cover the whole store}=19.5$

Since we can not purchase 0.5 of a camera, so we will round up our answer.

$\text{Cameras required to cover the whole store}=20$

Therefore, we need 20 cameras to cover the whole store.