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Bess [88]
2 years ago
7

12. Find the area of a circle with a circumference of 11(3.14) feet

Mathematics
1 answer:
sweet-ann [11.9K]2 years ago
6 0

Answer:

A≈9.63

Step-by-step explanation:

Circumference: 11

Using the formulas

A=πr2

C=2πr

Solving forA

A=C2

4π=112

4·π≈9.62887

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Answer:

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Step-by-step explanation:

The ratios of sine and cos are defined as follows:

Sin A = \frac{Opposite}{Hypotenuse} , and

CosA = \frac{Adjacent}{Hypotenuse}

The hypotenuse is always the side opposite of the 90 degree angle (for the given triangle, the hypotenuse is 85)

Since we are looking at the angle A, the opposite side with respect to A would be the side length of 84. That leaves the side 13 as the adjacent side.

Thus, we can now write:

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CosA = \frac{Adjacent}{Hypotenuse}\\CosA=\frac{13}{85}

The correct answer is  the first answer choice.

7 0
3 years ago
I am struggling with these questions. Please help
Sauron [17]

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I recommend leaving Pi as it is and plugging the rest of the numbers first.

Then at the end multiply by 3.14 and round at the end.

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