lalacada1
22.02.2021 •
Mathematics
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panato. Punan ang concept map tungtec)
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Ответ:
Step-by-step explanation:
1. The circle is divided by 42 equal sectors.
Each sector has angle of:
360°/42 = 8.57° (rounded)2. The radius is half of the diameter:
r = d/2 = 183 /2 = 91.5 feet3. The length of the circle is:
C = 2πr = 2*3.14*91.5 = 574.62 feetEach arc has the length of:
574.62/42 = 13.68 feet (rounded)4. Area of each sector is:
A = πr²/42 = 3.14*91.5²/42 = 625.93 ft² (rounded5. 3 revolutions is equal to 3 times the perimeter of circle (take from question 3) :
3*574.62 feet = 1723.86 feet