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Which is the length of HJ expressed in terms of pi?
A. 3/10 pi
B. 9/20 pi
C. 11/20 pi
D. 81/20 pi

Which Is The Length Of HJ Expressed In Terms Of Pi A 310 Pi B 920 Pi C 1120 Pi D 8120 Pi class=

Sagot :

Mlarsen5000idn

Answer:

B. 9/20[tex]\pi[/tex]

Step-by-step explanation:

the circumference is 2[tex]\pi[/tex]r. Since the radius is one, that would be 2[tex]\pi[/tex].

81/360=0.225, or 22.5% of the circumference.  22.5% of 2[tex]\pi[/tex] is 0.45[tex]\pi[/tex].  0.45=9/20, so the answer is B.

CHECK: 2[tex]\pi[/tex] = 6.283

6.283x0.225=0.14137, or 9/20[tex]\pi[/tex]

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