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iren [92.7K]
3 years ago
10

Using the illustration below, calculate the area of the circle.

Mathematics
1 answer:
malfutka [58]3 years ago
3 0

Answer:

d^2 = 12^2 + 5^2 = 169

d = 13

r = d/2 = 6.5

A = pi·6.5^2 = 132.73 cm²

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Answer:

d. m<ABD = 50°, m<GBC = 47°, m<EBC = 50°, and m<DBG = 83°

Step-by-step explanation:

m<ABF = 47° (given)

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✍️m<ABD + m<ABF + m<FBE = 180° (angles on straight line)

m<ABD + 47° + 83° = 180° (substitution)

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Subtract 130 from each side

m<ABD = 180° - 130°

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✅m<GBC = 47° (Substitution)

✍️m<EBC = m<ABD (Vertical angles)

✅m<EBC = 50° (substitution)

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