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4 years ago

Find the area of the circle given the following information. Give the exact answer and an approximation to the nearest tenth.

Mathematics

2 answers:

SpyIntel [72]4 years ago

8 0

A = 3.14 x r^2
= 3.14 x 6^2
= 3.14 x 36
= 103.62

goblinko [34]4 years ago

3 0

________________________________

Hey!!!! 

<h3>Solution,</h3>

Diameter=12 in

Radius=12/2 =6 inch

Now, 

Area of circle=pi r ^2

 =3.14*(6)^2

 =113.04 inches^2

<h3>So the area of circle is 113.04 inches^2.</h3>

Hope it helps......

Good luck on your assignment

________________________________

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Answer:

Step-by-step explanation:

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3 years ago

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Step-by-step explanation:

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3 years ago

Which of the following trigonometric ratios are correct?

den301095 [7]

Hi there! In this problem, you should have the knowledge of three basic Trigonometric Ratio.

sinA = opposite/hypotenuse
cosA = adjacent/hypotenuse
tanA = opposite/adjacent

Now that we know three basic ratio. Let's check each choices!

sin50° = d/c

This choice is wrong because we focus on the 50° angle. When we focus on 50°, sin50° should be d/x and not d/c.

sin50° = c/x

This choice is also wrong because in ratio, it's cos50° that adjacent/hypotenuse.

tan50° = d/c

This choice is correct! As ratio states, tanA = opposite/adjacent.

tan50° = x/c

This choice is wrong. x/c is a reciprocal of cosine which is 1/cos. We call the reciprocal of cosine as secant or sec in short.

cos50° = x/d

This choice is wrong as x/d is a reciprocal of sine which is 1/sin. We call the reciprocal of sine as cosecant or cosec/csc in short.

cos50° = c/x

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Answer

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cos50° = c/x

Questions can be asked through comment.

Furthermore, tan also has its reciprocal form itself which is called cotangent also known as cot in short.

Hope this helps, and Happy Learning! :)

8 0

3 years ago

There are 32 students in a class. Of the class, 3/8 of the students bring their own lunches. How many students bring their lunch

OverLord2011 [107]

Answer:

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Step-by-step explanation:

Let

x -----> the number of students that bring their lunches

y -----> the total number of students in a class

we know that

The number of students that bring their lunches divided by the total number of students in a class must be equal to 3/8

$\frac{x}{y}=\frac{3}{8}$

$x=\frac{3}{8}y$ -----> equation A

$y=32$ -----> equation B

substitute the value of y in equation A and solve for x

$x=\frac{3}{8}(32)$

$x=12$

therefore

The number of students that bring their lunches is 12

6 0

3 years ago

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lesya692 [45]

Answer:

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Whereas, negative signed numbers show decrease. Examples include; loss of weight, withdrawal of money from an account, loans, liabilities, losses, temperature below zero degrees, height below sea level.

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7 0

3 years ago