Question

find the surface area of each cube.
1)

surface area =
2)
9 yd

surface area =
3)
12 in

surface area =
4)
11 yd

surface area =
5)
15 in

surface area =
6)
7 ft

surface area =

1. if the side length of the cube is 12 feet, find the surface area.

1. determine the surface area of the cube whose side length is 3 inches.

Explanation:

The formula for the surface area of a cube is $SA = 6s^2$, where $s$ is the side length of the cube. We apply this formula to each problem:

Step1: Use cube surface area formula

$SA = 6s^2$
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1) Cube with $s=13$ ft

Step2: Substitute $s=13$

$SA = 6\times(13)^2 = 6\times169$

Step3: Calculate the product

$SA = 1014$

2) Cube with $s=9$ yd

Step2: Substitute $s=9$

$SA = 6\times(9)^2 = 6\times81$

Step3: Calculate the product

$SA = 486$

3) Cube with $s=12$ m

Step2: Substitute $s=12$

$SA = 6\times(12)^2 = 6\times144$

Step3: Calculate the product

$SA = 864$

4) Cube with $s=11$ yd

Step2: Substitute $s=11$

$SA = 6\times(11)^2 = 6\times121$

Step3: Calculate the product

$SA = 726$

5) Cube with $s=15$ m

Step2: Substitute $s=15$

$SA = 6\times(15)^2 = 6\times225$

Step3: Calculate the product

$SA = 1350$

6) Cube with $s=2$ ft

Step2: Substitute $s=2$

$SA = 6\times(2)^2 = 6\times4$

Step3: Calculate the product

$SA = 24$

7) Cube with $s=12$ ft

Step2: Substitute $s=12$

$SA = 6\times(12)^2 = 6\times144$

Step3: Calculate the product

$SA = 864$

8) Cube with $s=3$ inches

Step2: Substitute $s=3$

$SA = 6\times(3)^2 = 6\times9$

Step3: Calculate the product

$SA = 54$

Answer:

1. $1014$ square feet
2. $486$ square yards
3. $864$ square meters
4. $726$ square yards
5. $1350$ square meters
6. $24$ square feet
7. $864$ square feet
8. $54$ square inches