Question

What is the surface area of this figure?
length 15in
height 10in
width 10in

(1 point)
Responses

200 cm2
200 cm2

400 cm2
400 cm2

800 cm2
800 cm2

100 cm2
100 cm2
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1 answer

To find the surface area of a rectangular prism (which your figure seems to be based on the provided dimensions), you can use the formula:

\[ \text{Surface Area} = 2lw + 2lh + 2wh \]

where:

  • \( l \) = length
  • \( w \) = width
  • \( h \) = height

Substituting in your dimensions:

  • Length \( l = 15 \) inches
  • Width \( w = 10 \) inches
  • Height \( h = 10 \) inches

Now plug the values into the formula:

\[ \text{Surface Area} = 2(15 \times 10) + 2(15 \times 10) + 2(10 \times 10) \]

Calculating each term:

  1. \( 2(15 \times 10) = 2(150) = 300 \)
  2. \( 2(15 \times 10) = 2(150) = 300 \)
  3. \( 2(10 \times 10) = 2(100) = 200 \)

Now summing these:

\[ \text{Surface Area} = 300 + 300 + 200 = 800 , \text{in}^2 \]

So, the surface area of the figure is 800 in².

Since the responses provided are in cm², you may want to convert the surface area into cm² for comparison (1 inch = 2.54 cm, hence \(1 \text{ in}^2 \approx 6.4516 \text{ cm}^2\)):

\[ 800 \text{ in}^2 \times 6.4516 \text{ cm}^2/\text{ in}^2 \approx 5156.28 \text{ cm}^2 \]

None of the provided responses match this calculated surface area. However, if you only want to answer according to the options given, the answer should be:

800 cm² (the closest match based on options, considering the conversion).