3 years ago

Calculate radius from 27 circumference

Mathematics

1 answer:

natali 33 [55]3 years ago

4 0

The radius is 4.29718

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Given: AC is a diameter of circle O and the measure of angle BAC =27. Find the

dalvyx [7]

Answer:

$m\angle BOC=54^\circ$

Step-by-step explanation:

First, we establish the following:

B, A and C are on the circle
AC is a diameter
The center of the circle is O

Therefore:

$\angle BAC$ is the angle subtended by arc BC on the circumference.\\\angle BOC$ is the angle subtended by arc BC at the centre.$

The inscribed angle theorem states that an angle inscribed in a circle is half of the central angle that subtends the same arc on the circle.

Therefore:

$\angle BOC =2\angle BAC\\\angle BOC=2 \times 27\\m\angle BOC=54^\circ$

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3 years ago

In a certain city, the record rainfall during an 12-hour period is 15 4/5 inches. How much rain fell per hour on average?

masya89 [10]

Answer:

79/60 or 1 19/60 or 1.316

Step-by-step explanation:

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3 years ago

What is 4.2 less than 7.6

PSYCHO15rus [73]

Answer: 3.4

Step-by-step explanation: 6-2 is 4 and 7-4=3 therefore it’s 3.4

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3 years ago

Solve d=a+c/ac for a

lozanna [386]

Answer:

a=d(ac)-c

Step-by-step explanation:

Yes (multiply ac both sides subtract C both sides gets a alone)

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3 years ago

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25x25 + 15 +450 - 768 = ? <br><br> hi

irina1246 [14]

Answer:

322

Step-by-step explanation:

25 x 25 = 625

Awn. + 15 = 640

Awn. + 450 = 1090

Awn. - 768 = 322

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3 years ago

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