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yulyashka [42]
3 years ago
11

What is the diameter of a circle that has a circumference of 56.52 feet? Round your answere to the nearest whole number

Mathematics
1 answer:
Lelechka [254]3 years ago
4 0
Circumference = 2pi * radius
Diameter = 2 * radius

Circumference = pi * diameter

56.52 = pi * diameter
56.52/pi = (pi * diameter)/pi

18 = diameter
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If ∠BAC = 17° and ∠CED = 17° are the two triangles, ΔBAC and ΔCED similar? If so, by what criterion?
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No, not possible to tell that the the two triangles, ΔBAC and ΔCED

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Step-by-step explanation:

Let us revise the cases of similarity

1. AAA similarity : two triangles are similar if all three angles in the first

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2. AA similarity : If two angles of one triangle are equal to the

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3. SSS similarity : If the corresponding sides of the two triangles are

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4. SAS similarity : In two triangles, if two sets of corresponding sides  

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In the two triangles BAC and CED

∵ m∠BAC = 17°

∵ m∠CED = 17°

∴ m∠BAC = m∠CED

But we need another pair of angles to prove that the two triangles are

similar by AA similarity criterion

<em>OR </em>

The lengths of sides BA , CA and CE , DE to show that

\frac{BA}{CE}=\frac{CA}{DE} = constant ratio and prove that the

two triangles are similar by SAS similarity criterion

So it is not possible to prove that the two triangles are similar

No, not possible to tell that the the two triangles, ΔBAC and ΔCED

are similar

Learn more:

You can learn more about triangles in brainly.com/question/4354581

#LearnwithBrainly

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