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labwork [276]
3 years ago
12

Whats the perimeter of a semicircle of 6cm​

Mathematics
1 answer:
pashok25 [27]3 years ago
3 0

Answer:

P = 15.42 cm

Step-by-step explanation:

Perimeter of circle = (πD/2)+D

Where D = 6 cm

P =( (3.14)(6)/2) + 6

P = (3.14)(3)+6

P = 9.4 + 6

P = 15.4 cm

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Solve using substitution. <br> 7x-4y=-12<br> 9x-4y=-20
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Step-by-step explanation:

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​

2 Substitute x=\frac{4(y-3)}{7}x=

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​

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​

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.

x=-4

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