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2 years ago

NEED HELP PLEASE HURRY. The diameter of the larger circle is 12.5 cm. The diameter of the smaller circle is 3.5 cm.

Mathematics

2 answers:

nignag [31]2 years ago

5 0

113.04, I actually just finished this quiz.

Leona [35]2 years ago

5 0

Answer:

113.04

That dude in the other answer is most likely to be in K12 just like me.

And also, I just finished the quiz asweal.

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Please answer this for me! 8 (6 - 4) = 12 =

Snezhnost [94]

Answer:

Not a true statement.

Step-by-step explanation:

8(6-4)=12

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2 years ago

Find the length of side AB Give answer to 3 significant figures

Rina8888 [55]

Answer:

AB = 8.857 cm

Step-by-step explanation:

Here, we are given a right angle $\triangle ABC$ in which we have the following things:

$\angle A = 90 ^\circ\\\angle C = 41 ^\circ\\\text{Side }BC = 13.5 cm$

Side BC is the hypotenuse here.

We have to find the side AB.

Trigonometric functions can be helpful to find the value of Side AB here.

Calculating $\angle B$ :

Sum of all the angles in $\triangle ABC$ is $180^\circ$ .

$\Rightarrow \angle A + \angle B + \angle C = 180^\circ\\\Rightarrow 90^\circ + \angle B + 41^\circ = 180^\circ\\\Rightarrow \angle B = 49^\circ$

We know that cosine of an angle is:

$cos \theta = \dfrac{\text{Base}}{\text{Hypotenuse}}\\\Rightarrow cos B = \dfrac{AB}{BC}\\\Rightarrow cos 49^\circ = \dfrac{AB}{13.5}\\\Rightarrow AB = 13.5 \times 0.656\\\Rightarrow AB = 8.857 cm$

So, side AB = 8.857 cm .

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