jorgefrom584
19.03.2020 •
Mathematics
A circle has a sector with area 27pi and central angle of 120 degrees. What is the area of the circle
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Ответ:
81 π
Step-by-step explanation:
The total central angle for a circle is 360 degrees.
In the question the sector with angle 120 degrees has area 27π.
So the circle can be considered as a combination of 3 sectors having angle 120 degrees each. Refer to the figure below.
Thus area of the circle will be three times of the area of the sector.
Area = 3 × 27π = 81π
Ответ:
5m + 2n + (n - 3m) + (7 - 3n) = 5m - 3m + 2n + n - 3n + 7 = 2m + 7
Step-by-step explanation: