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aksik [14]
3 years ago
6

Please answer see the image 30 points!

Mathematics
1 answer:
Nataly [62]3 years ago
8 0

Answer:

<h2>37.7 </h2><h2 />

Step-by-step explanation:

perimeter of semicircle = 1/2 π d

                                       = 1/2 π (6)

                                       = 9.425 x 4 semicircles

                                       = 37.7

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GalinKa [24]
The cosine for F is A
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If cos theta=-3/5 in quadrant 2 what is sin theta?<br><br> A:4/5<br> B:3/4<br> C:-3/4<br> D:-4/5
Scrat [10]
Answer: Choice A) 4/5

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

Work Shown:

cos^2(theta) + sin^2(theta) = 1
(-3/5)^2 + sin^2(theta) = 1
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9/25 + sin^2(theta) - 9/25 = 1 - 9/25
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sin^2(theta) = (25 - 9)/25
sin^2(theta) = 16/25
sqrt[sin^2(theta)] = sqrt[16/25]
sin(theta) = 4/5

The fact that sine is positive in quadrant 2 means that the result is positive.
8 0
3 years ago
A ladder reaches the top of a 20 foot building. the ladder is 4.5 feet away from the building. how long is the ladder?
KATRIN_1 [288]

Answer:

C

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do that with pithagoras:

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Letter C: 20,5 feet

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125.638 rounded to nearest hundred
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