Helitaanka wareegga afar-geeska ah: formula iyo hawlaha

Daabacaaddan, waxaan ka fiirsan doonaa sida loo xisaabiyo wareegga afar geesaha iyo falanqaynta tusaalooyinka xalinta dhibaatooyinka.

Qaacidada Wareegga

Dhererka dhinaca

Wareegga (P) labajibbaaran waxay la mid tahay wadarta dhererka dhinacyadeeda.

P = a + a + a + a

Mar haddii dhammaan dhinacyada labajibbaaran ay siman yihiin, qaacidada waxaa lagu tilmaami karaa alaab ahaan:

P = 4 ⋅ a

Oo ay weheliyaan dhererka dabaylaha

Wareegga (P) ee labajibbaaran waxa uu la mid yahay sheyga dhererka geeskiisa iyo lambarka 2√2:

P = d ⋅ 2√2

Qaaciddadani waxay la socotaa saamiga dhererka dhinaca (a) iyo xajmiga (d) ee labajibbaaran:

d = a√2.

Tusaalooyinka hawlaha

Hawsha 1

Soo hel wareegga labajibbaaran haddii dhinaciisu yahay 6 cm.

Go'aanka:

Waxaan isticmaalnaa qaacidada uu qiimaha dhinacku ku lug leeyahay:

P = 6 cm + 6 cm + 6 cm + 6 cm = 4 ⋅ 6 cm = 24 cm.

Hawsha 2

Soo hel wareegga afar geesoodka oo geeskiisu yahay √2 arki

1 Xalka:

Anagoo tixgelinayna qiimaha aan naqaanno, waxaan isticmaalnaa qaacidada labaad:

P = √2 cm ⋅ 2√2 = 4cm.

2 Xalka:

U muuji dhererka dhinaca marka loo eego geesaha:

a = d / √2 = √2 cm/√2 = 1cm.

Hadda, anagoo adeegsanayna qaacidada koowaad, waxaan heleynaa:

P = 4 ⋅ 1 cm = 4 cm.