Asector has an area of 1/2 π and the central angles of 1/9 π radians. what is the area of the circle?

Area of circle is 9π

Step-by-step explanation:

The area of sector of a circle is given by

Plugging the given values in the formula, we get

Cancel out 1/2 and π from both sides, we are left with

Cross multiplying, we get

Therefore, area of circle is given by

Area of circle is 9π

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step-by-step explanation:

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2.2°  

step-by-step explanation:

let θ = the angle of elevation.

tanθ =77/2020

tanθ = 0.038 12

      θ = tan⁻¹0.038 12

      θ = 2.2°