Paulita is going to build a storage cube. Each edge is 14 inches. The wood costs $0.03 per square inch. Use 0.03(5e2)

, where e
is the edge length, to evaluate for e = 14
. (1 point)
Responses

$29.40
$29.40

$4.20
$4.20

$147.00
$147.00

$4.41

1 answer

To find the cost of building the storage cube, we first need to determine the surface area of the cube.

The formula for the surface area \( A \) of a cube is given by: \[ A = 6e^2 \] where \( e \) is the length of an edge.

Given that \( e = 14 \) inches, we can calculate the surface area:

\[ A = 6(14^2) = 6(196) = 1176 \text{ square inches} \]

Next, we need to find the total cost of the wood. The cost per square inch is $0.03, so we multiply the surface area by the cost per square inch:

\[ \text{Cost} = 0.03 \times 1176 \]

Now, let's compute this:

\[ \text{Cost} = 0.03 \times 1176 = 35.28 \]

It seems I've made a mistake with the provided expression \( 0.03(5e^2) \). Let's evaluate this instead.

Substituting \( e = 14 \):

\[ 0.03(5(14^2)) = 0.03(5(196)) = 0.03 \times 980 = 29.40 \]

Therefore, the total cost of the wood is $29.40. The correct response is:

$29.40