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White raven [17]
3 years ago
9

Can someone help i really need help

Mathematics
1 answer:
love history [14]3 years ago
6 0

9514 1404 393

Answer:

  1. no problem is stated

  2. cube: V = s³; A = 6s². prism: V = lwh; A = 2(lw +h(l+w))

  3. 400 cm²

Step-by-step explanation:

1, 2. Answers shown above. The formulas are from your list of formulas.

__

3. Cube surface area is ...

  A = 6(20 cm)² = 2400 cm²

Prism surface area is ...

  A = 2((40 cm)(20 cm) +(10 cm)(40 cm +20 cm))

  A = 2(800 cm² +10(60) cm²) = 2(1400 cm²) = 2800 cm²

The difference in areas is ...

  2800 cm² -2400 cm² = 400 cm² . . . . difference in surface area

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natka813 [3]

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Step-by-step explanation: "Per box" means in 1 box, so we can rewrite the given statement using fractions as

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To find out what goes in the blank, notice that we

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forsale [732]
Ten times 45 is equal to 450

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atroni [7]
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13. Find PS.<br><br> 39<br><br> Р<br><br> \76°<br><br> R<br><br> 28°<br><br> S
baherus [9]

Answer:

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Step-by-step explanation:

Find the diagram attached

In order to get PS, we need to get the length of QS first

According to triangle QRS;

QS =opposite

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Using SOH CAH TOA

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QS = 39tan28

QS = 39(0.5317)

QS = 20.74

Get PS

sin theta = QS/PS

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PS = 20.74/sin76

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Answer:

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