What is the area of a sector with radius 10\" and measure of arc equal to 45°?

Area of sector of circle = 39.27 square inches.

Step-by-step explanation:

Given that,

Radius of sector = 10 inches.

Measure of arc = 45°

We have a formula to find the area of sector of circle:

Area =

where,

r is radius

α is angle in degree

Area =

Area = 100*0.125π

Area = 12.5π

or Area = 39.269 ≈ 39.27 sq in

That's the final answer.

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°