Question

a company makes storage containers with sheet - steel walls. the containers are shaped like rectangular prisms, as shown below. if the company is going to make 5 containers, how many square meters of sheet steel will be needed?
4 m
4 m
6 m

Explanation:

Step1: Calculate surface - area of one container

The surface - area formula of a rectangular prism is $2(lw + lh+wh)$, where $l = 6$m, $w = 4$m, and $h = 4$m.
$2(6\times4 + 6\times4+4\times4)=2(24 + 24 + 16)=2\times64 = 128$ $m^{2}$

Step2: Calculate surface - area for 5 containers

Multiply the surface - area of one container by 5.
$128\times5=640$ $m^{2}$

Answer:

640