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DENIUS [597]
3 years ago
12

Find the surface area of the regular pyramid. Write your answer as a decimal.

Mathematics
2 answers:
Salsk061 [2.6K]3 years ago
4 0

Answer:

322.5 in²

Step-by-step explanation:

1 base triangle + 3 top triangles

(½×15×13) + 3(½×10×15)

322.5

Llana [10]3 years ago
4 0

Answer:

the answer is attached to the picture

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Help with this one? Please
netineya [11]

Answer:

x = 40

Step-by-step explanation:

The figure shows two similar triangles. Thus, the side lengths of similar triangles are proportional to each other. Therefore:

\frac{24}{24 - 15} = \frac{x}{x - 25}

\frac{24}{9} = \frac{x}{x - 25}

Cross multiply

24(x - 25) = 9(x)

24x - 600 = 9x

Subtract 24x from each side

- 600 = 9x - 24x

- 600 = -15x

Divide both sides by -15

40 = x

x = 40

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2 years ago
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3 years ago
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hammer [34]
A(4/3, -4 that is the correct response
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