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svetlana [45]
4 years ago
11

What is the radian measure of 205°? Express your answer as a fraction.

Mathematics
1 answer:
V125BC [204]4 years ago
8 0

The radian measure of 205 degees is \frac{ 41 \pi }{36} radians

<em><u>Solution:</u></em>

Given that we have to express 205 degrees as radian

<em><u>To convert from degrees to radians use the following:</u></em>

x^{\circ} \times \frac{ \pi}{180}

where x is the value in degrees to be converted

Here, x = 205 degrees

Substituting we get,

\rightarrow 205 \times \frac{ \pi }{180}\\\\\rightarrow 41 \times \frac{ \pi }{36}\\\\\rightarrow \frac{41 \pi}{36}

Thus the radian measure of 205 degees is \frac{ 41 \pi }{36} radians

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<h3>Answers:</h3><h3>The shortest side is 15 ft</h3><h3>The middle side is 18 ft</h3><h3>The longest side is 26 ft</h3>

===========================================

Define the three sides to be a,b,c such that a < b < c

So c is the longest side, and 'a' is the shortest with b in the middle.

"longest side is 4 ft shorter than twice the shortest side" means that c = 2a-4

"third side is 3 ft longer than the shortest side" so b = a+3

Both b and c are in terms of 'a', allowing us to do substitutions like so

a+b+c = perimeter

a+b+c = 59

a+(a+3)+c = 59 .... first substitution, plug in b = a+3

a+(a+3)+(2a-4) = 59 ... second substitution, plug in c = 2a-4

4a-1 = 59 .... combine like terms

4a = 59+1 ... add 1 to both sides

4a = 60

a = 60/4 ... divide both sides by 4

a = 15

The shortest side is 15 ft

b = a+3 = 15+3 = 18

The middle side is 18 ft

c = 2a-4 = 2*15-4 = 26

The longest side is 26 ft

---------------------

Check:

The three sides should add up to a perimeter of 59 ft

a+b+c = 15+18+26 = 59

so the answer is confirmed

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