fatcousin
search
⌘
K
→
jump to any tool — keyboard-first launcher.
tools
→
browse every utility in one place.
manifesto
→
why fatcousin exists — local-first, no uploads.
install
→
save this toolset to your device — works offline.
search
⌘
K
→
jump to any tool — keyboard-first launcher.
←
home
c
i
r
c
l
e
t
h
e
o
r
e
m
s
radius · arc · chord · sector — enter what you know, get the rest
[
circle
]
radius (r)
central angle (θ)
[
properties
]
circle
radius
5
diameter
10
circumference
31.415927
area
78.539816
for θ = 60°
arc length
5.2359878
sector area
13.089969
chord length
5
>
ready
ready
local
verify
→