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Vinil7 [7]
3 years ago
11

The radius of a circle is 7 centimeters,

Mathematics
1 answer:
Lostsunrise [7]3 years ago
4 0

Answer:

Circumference: 43.9822971503 or 43.98

Area: 153.9380400259 or 153.94

Step-by-step explanation:

So basically for the circumference you use C= d×π which means that the circumference is equal to the diameter (radius times 2) multiplied by pi! For the area you use the formula A= r^2×π which means the radius squared (radius times itself) multiplied by pi! By the way you can also round pi down to 3.14 to make it easier. Anyway I hope this helps!!

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Answer:

1. Proportional

2. Not proportional

3. Proportional

Step-by-step explanation:

Mike's proportion

Michael gave $1.32 tip for an order that cost $8.80

$1.32÷$8.80=0.15

Given

1. $2.22 for $14.80

$2.22÷$14.80 =0.15

It is proportional to Mike's tip

2. $1.86 for $10.50

$1.86÷$10.50=0.1771

It I not proportional to Mike's tip

3. $0.78 for $5.20

$0.78÷$5.20=0.15

It is proportional to Mike's tip

Therefore,

1. Proportional

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3. Proportional

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Answer

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Step-by-step explanation:

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Step-by-step explanation:

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Step-by-step explanation:

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