x^2 + y^2<=a^2

(none)

(none)

a>0

A = π a^2

x^_ = (0, 0)

J_x invisible comma x = (π a^4)/4

J_y invisible comma y = (π a^4)/4

J_zz = (π a^4)/2

J_x invisible comma y = 0

r_x = a/2 r_y = a/2

K = (π a^4)/2

(none)

p = 2 π a

r = a

R = a

2 a

χ = 1

s^_ = (128 a)/(45 π)

A^_ = (35 a^2)/(48 π^2)

laminae of constant width | convex laminae | curvilinear laminae

standard international dartboard