Question
An arc of a circle radius 13cm substends to an angle 105° at the center. Calculate
The length of arc
The perimeter
Area of sector
The length of arc
The perimeter
Area of sector
Answers
oobleck
we have θ = 105/360 * 2π
s = rθ
p = s + 2r
a = 1/2 r^2 θ
so plug and chug
s = rθ
p = s + 2r
a = 1/2 r^2 θ
so plug and chug