3 years ago

Answer this question to get marked as brainliest!!!!

Mathematics

1 answer:

ivann1987 [24]3 years ago

8 0

Answer:

B. 90 feet

Step-by-step explanation:

20+5+5= diameter of the outer circle (30feet)

My calculator says a circle with a diameter with 30, will have about 94 feet for its circumference.

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Lynna [10]

Answer:

option C. $KL=2*JL$

option D. $JK=\frac{\sqrt{3}}{2}*KL$

option F. $JK=\sqrt{3}*JL$

Step-by-step explanation:

step 1

we know that

In the right triangle JKL

$sin(30\°)=\frac{JL}{KL}$

$sin(30\°)=\frac{1}{2}$

$\frac{1}{2}=\frac{JL}{KL}$

$KL=2*JL$

step 2

$cos(30\°)=\frac{JK}{KL}$

$cos(30\°)=\frac{\sqrt{3}}{2}$

$\frac{\sqrt{3}}{2}=\frac{JK}{KL}$

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step 3

$tan(30\°)=\frac{JL}{JK}$

$tan(30\°)=\frac{1}{\sqrt{3}}$

$\frac{1}{\sqrt{3}}=\frac{JL}{JK}$

$JK=\sqrt{3}*JL$

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Step-by-step explanation:

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