Áireamhán Limistéir
Ríomh achar dronuilleogach, triantán, ciorcal, trapezoid nó comhthreomhar.
Torthaí a nuashonrú mar a chlóscríobh tú.
Maidir leis an áireamhán seo
An area calculator finds how much surface a 2D shape covers. Pick the shape, enter its dimensions, and it returns the area — and, where the sides are known, the perimeter or circumference. Only the fields the chosen shape actually needs are used; the rest are ignored.
Each shape has its own formula: a rectangle is length × width, a triangle is ½ × base × height, a circle is π × radius², a trapezoid is ½ × (base₁ + base₂) × height, and a parallelogram is base × height. For a rectangle 5 long and 4 wide the area is 5 × 4 = 20 and the perimeter is 2 × (5 + 4) = 18; a triangle with base 6 and height 4 has area ½ × 6 × 4 = 12; a circle of radius 5 has area π × 25 ≈ 78.54. Perimeter is shown for rectangles and circles, but not for triangles, trapezoids or parallelograms, whose slanted sides are not entered.
Area calculations are needed for flooring, paint, fabric, land, and any project measured by surface. Make sure all dimensions use the same unit, and the area comes out in that unit squared.
Ceisteanna Coitianta
Conas a fhaigheann tú achar triantáin?
Achar = ½ × bonn × airde, ag baint úsáide as an airde ingearach.Tá achar ½ × 6 × 4 = 12 ag triantán le bonn 6 agus airde 4.
Cad é achar an chiorcail?
Achar = π × ga². Tá achar π × 25 ≈ 78.54 ag ciorcal le ga 5.
Conas a fhaigheann tú achar dronuilleogach?
Iolraigh fad faoi leithead. Tá achar 5 × 4 = 20 ag dronuilleog atá 5 mhéadar ar fhad agus 4 mhéadar ar leithead.
Céard é achar trapezoid?
Achar = ½ × (bonn₁ + bonn₂) × airde, meánmhéid an dá thaobh comhthreomhara agus iolrú faoin airde idir iad.
Céard é achar comhthreomhar?
Limistéar = bonn × airde, ag baint úsáide as an airde ingearach, ní an fad taobh claonta.
Cén fáth a léiríonn an imlíne uaireanta fleasc?
Tá gá le fad na taobhanna claonta i dtriantáin, i dtraipéisí agus i gcomhthreomharleagain, ach ní iontráiltear iad, mar sin fágtar a n-imlíne folamh.
Cé na réimsí a chaithfidh mé a líonadh isteach?
Na cinn a úsáideann an cruth roghnaithe amháin. Ní gá ach ga do chiorcal; déanfar neamhaird ar na réimsí leithead agus airde.
API — úsáid an áireamhán seo ó chód
Glaoigh ar an áireamhán seo mar chríochphointe JSON saor in aisce - níl aon eochair ag teastáil. Seol na luachanna réimse thíos mar pharaiméadair cheist nó JSON. Anything you omit uses the same default this page is pre-filled with; an unknown parameter is a 400, never a silent zero. Léigh an doiciméadú iomlán API →
Deireadhphointe
GET https://calculator.free/api/v1/area-of-a-shape/curl
curl "https://calculator.free/api/v1/area-of-a-shape/?shape=rectangle&a=5&b=4&h=3"JavaScript fetch()
const r = await fetch(
"https://calculator.free/api/v1/area-of-a-shape/?" + new URLSearchParams({
"shape": "rectangle",
"a": "5",
"b": "4",
"h": "3"
}));
const data = await r.json();
console.log(data.results);Is meastacháin iad na torthaí le haghaidh treoir ghinearálta amháin, ní comhairle airgeadais, leighis nó cánach.