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aleksley [76]
2 years ago
5

Hellpp please 20 points for that​

Mathematics
1 answer:
Sergio [31]2 years ago
8 0

Answer:

a) 12cm

b) 360cm²

c) 2160cm cubed

Step-by-step explanation:

a)

you would use Pythagoras theorem  for A

so half of 18 is 9

15² - 9² = 144

the square root of 144 is 12

the height is 12cm

b)

18 x 20 = 360cm²

c)

csa x L

csa = b x h divide by 2

18 x 12 = 216cm²/2 = 108cm²

108xm² x 20cm = 2160cm cubed

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How do you write 5.9 in expanded form
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(5 * 1) + (9 * 0.1).<span>

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Make the equation.

\frac{2}{3}  = \frac{x}{12}

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6 0
2 years ago
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Exponential equation for an amount:

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3 years ago
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