Eaghtyr

Ass Wikipedia.

She yn mooad towse-oaylleeagh bun-chooish y ghuillag shoh. My vel sym ayd ayns keeal elley yn 'ockle shoh, lhaih Eaghtyr (reddaghey).

Ta'n fockle eaghtyr ny chur sheese er mooad ta fockley mooadys daa-howshanagh er rheynn vaghtal jeh baare, eaghtyr ny crackan, ta caglit liorish cruill ghooint. Ta'n enmys ny chur sheese er slane eaghtyr baare, eaghtyr ny crackan anchoodit jeh stooalt tree-howshanagh, lheid as sym eaghtyryn jeh çheughyn anchoodit polyheedrane.

[reaghey] Unnidyn

Ta unnidyn ry hoi towshanagh eaghtyr goaill stiagh lheid as:

are (a) = 100 meteryn kerrinagh (m²)

hectare (ha) = 100 areyn (a) = 10000 meteryn kerrinagh (m²)

kilometer kerrinagh (km²) = 100 hectareyn (ha) = 10000 areyn (a) = 1000000 meteryn kerrinagh (m²)

mooar-veter kerrinagh (Mm²) = 10¹² meteryn kerrinagh

trie cherrinagh = 144 oarlee cherrinagh = 0.09290304 meteryn kerrinagh (m²)

stundayrt kerrinagh = 9 trieyn kerrinagh (0.84 m²) = 0.83612736 meteryn kerrinagh (m²)

perçh kerrinagh = 30.25 stundayrtyn kerrinagh = 25.2928526 meteryn kerrinagh (m²)

meeilley cherrinagh = 640 acyryn (2.6 km²) = 2.5899881103 kilometeryn kerrinagh (km²)

[reaghey] Formley

Formley cadjin da eaghtyr:
Cummey	Cormid	Ceaghlee
Kerrin	$s^2\,\!$	She $s$ lhiurid un çheu y cherrin.
Troorane cadjin (troorane co-lhiatteeagh)	$\frac{\sqrt{3}}{4}s^2\,\!$	She $s$ lhiurid un çheu y troorane.
Shey-lhiattaghan cadjin	$\frac{3\sqrt{3}}{2}s^2\,\!$	She $s$ lhiurid un çheu y shey-lhiattaghan.
Hoght-lhiatteeane cadjin	$2\left(1+\sqrt{2}\right)s^2\,\!$	She $s$ lhurid un çheu y hoght-lhiatteeane.
Yl-lhiatteeane cadjin erbee	$\frac{1}{2}a p \,\!$	She $a$ yn apothem, ny craue raadeeoil jeh kiarkyl grainnit 'syn yl-lhiatteeane, as she $p$ ym-linney yn yl-lhiatteeane.
Yl-lhiatteeane cadjin erbee	$\frac{ns^2} {4 \cdot \tan(\pi/n)}\,\!$	She $s$ y çheu-lhiurid as she $n$ earroo ny çheughyn.
Yl-lhiatteeane erbee (jannoo ymmyd jeh towse keim)	$\frac{ns^2} {4 \cdot \tan(180^\circ/n)}\,\!$	She $s$ y çheu-lhiurid as she $n$ earroo ny çheughyn.
Kiare-chuilleig	$lw \,\!$	She $l$ as $w$ lhiuridyn jeh çheughyn ny kiare-chuilleig (lhiurid as lheead).
Coheeyntane (dy cadjin)	$bh\,\!$	She $b$ as $h$ lhiurid y vun as lhiurid yn yrjid jeeraghan, er lheh.
Rhombus	$\frac{1}{2}ab$	She $a$ as $b$ lhiuridyn daa hessen y rhombus.
Troorane	$\frac{1}{2}bh \,\!$	She $b$ as $h$ bun as yrjid (towsit ayns jeeraghan rish y vun), er lheh.
Troorane	$\frac{1}{2} a b \sin(C)\,\!$	She $a$ as $b$ daa çheu erbee, as she $C$ yn uillin eddyr oc.
Kiarkyl	$\pi r^2\ \text{ny}\ \frac{\pi d^2}{4} \,\!$	She $r$ y chraue raadeeoil as she $d$ y crantessen.
Eelips	$\pi ab \,\!$	She $a$ as $b$ ny h-essylyssyn lieh-vooar as lieh-veg, er mod.
Far-voayrdeen	$\frac{1}{2}(a+b)h \,\!$	She $a$ as $b$ ny çheughyn coheeynt as she $h$ y foddeeaght (yrjid) eddyr ny colinnaghyn.
Slane eaghtyr y Rollian	$2\pi r^2+2\pi r h \,\!$	She $r$ as $h$ y chraue raadeeoil as yn yrjid, er mod.
Eaghtyr lhiattagh y rollian	$2 \pi r h \,\!$	She $r$ as $h$ y chraue raadeeoil as yn yrjid, er mod.
Slane eaghtyr y chughlin	$\pi r (l + r) \,\!$	She $r$ as $l$ y chraue raadeeoil as yn yrjid sceau, er mod.
Eaghtyr lhiattagh y chughlin.	$\pi r l \,\!$	She $r$ as $l$ y chraue raadeeoil as yn yrjid sceau, er mod.
Slane eaghtyr ny cruinney	$4\pi r^2\ \text{ny}\ \pi d^2\,\!$	She $r$ and $d$ are the radius and diameter, respectively.
Slane eaghtyr yn eelipsoyd		Jeeagh er yn art.
Rheynnag chiarkylagh	$\frac{1}{2} r^2 \theta \,\!$	She $r$ as $θ$ y chraue raadeeoil as yn uillin (ayns raadjanyn), er mod.
Çhyndaays eaghtyr kerrinagh dys eaghtyr kiarkylagh	$\frac{4}{\pi} A\,\!$	She $A$ eaghtyr y cherrin ayns unnidyn kerrinagh.
Çhyndaays eaghtyr kiarkylagh dys eaghtyr kerrinagh	$\frac{1}{4} C\pi\,\!$	She $C$ eaghtyr y chiarkyl ayns unnidyn kiarkylagh.