What is the measure of

Mathematics

1 answer:

LenKa [72]2 years ago

3 0

Answer:

C. Ф = 4 radians

Step-by-step explanation:

Given,

Radius of the Circle (r) = 3cm

Length of the Arc (S) = 12cm

In any circle of radius r, the arc length S to the circumference equals the ratio of the angle θ subtended by the arc at the centre and the angle in one revolution. Thus, measuring the angles in radians, S=rθ.

Therefore, S = r*Ф

12 = 3*Ф

Hence, Ф = 4 radians

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Lunna [17]

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Answer:

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Henry takes a math test that had 20 questions.

dezoksy [38]

The percentage of correct answers is 85% and the percentage of incorrect answers is 15% and this can be determined by using the unitary method.

Given :

Henry takes a math test that had 20 questions.
He answered 17 questions correctly and 3 questions incorrectly.

The following steps can be used in order to determine the percentage of correct and incorrect questions Henry answered:

Step 1 - The unitary method can be used in order to determine the percentage of correct and incorrect questions Henry answered.

Step 2 - The total number of questions in a math test is 20. The total number of correct answers is 17 and the total number of incorrect answers is 3.

Step 3 - If the 20 is the 100% questions then the percentage of 17 correct answers is:

$=\dfrac{17}{20}\times 100$