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bearhunter [10]
1 year ago
8

Help me on this one please​

Mathematics
2 answers:
soldi70 [24.7K]1 year ago
7 0

Answer:

615.8

Step-by-step explanation:

Circle area = π * r² = π * 196 [mcm²] ≈ 615.8 [cm²]

Georgia [21]1 year ago
4 0

Answer:

Area is 616 square centimeters.

Step-by-step explanation:

<u>Area of Circle</u>

A = \pi r^2

A ... area

r ... radius

<u>Given</u>

r = 14 cm

Use formula.

A = \pi r^2

A = \pi (14 \text{ cm})^2

A = \pi (196) \text{ cm}^2

Use \frac{22}{7} for \pi, since they tell you to use that in instructions.

A = (\frac{22}{7}) (196)  \text{ cm}^2

A = 616 \text{ cm}^2

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Answer:

The first mechanic charges $105 per hour, and the second mechanic charges $90 per hour.

Step-by-step explanation:

If x is the rate of the first mechanic, and y is the rate of the second mechanic, then:

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Solve the system of equations using elimination or substitution.  Using substitution:

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x = 105

y = 195 − x

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The first mechanic charges $105 per hour, and the second mechanic charges $90 per hour.

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