4 years ago

Simplify: 8.2c−0.9+(5.4−18d+7.2c)÷0.06

Mathematics

1 answer:

AVprozaik [17]4 years ago

4 0

SIMPLIFY THEN ADD 4 TO SUBBTRACT 5

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Find the angle of the sector given the radius and the area of the sector.

gregori [183]

Answer:

270 degrees

Step-by-step explanation:

$Area \: of \: the \: sector \\ \\ = \frac{ \theta}{360 \degree} \times \pi {r}^{2} \\ \\ 339.3 = \frac{ \theta}{360 \degree} \times 3.14 {(12)}^{2} \\ \\ 339.3 = \frac{ \theta}{360 \degree} \times 3.14 \times 144 \\ \\ \theta = \frac{339.3 \times 360 \degree}{3.14 \times 144} \\ \\ \theta = \frac{122,148\degree}{452.16} \\ \\ \theta= 270.143312 \degree \\ \\ \theta \approx \: 270\degree$