A cikin gini, da'irori sun zama ruwan dare gama gari. Ana amfani da su don dalilai daban-daban: a cikin tushe, windows, lokacin gyarawa. Kalkuleta zai taimaka maka da sauri lissafin yankin da'irar. Don yin wannan, shigar da dabi'u kuma samun sakamakon.
Kuna buƙatar shigar da bayanai a cikin mita, kuma ana samun sakamakon a cikin murabba'in mita - m². Ƙididdigar da aka tsara tana ƙididdige yanki ta radius, dabarar ita ce kamar haka:
S=πr²
inda:
- S – yankin da ake so,
- r shine radius na da'irar.
Ta diamita
Idan kana buƙatar ƙididdige yanki ta diamita, to, lissafin da ke ƙasa zai taimaka.
Tsarin lissafi a wannan yanayin shine:
S=π*d2/4
Ina d shine diamita na da'irar.
Bari mu lissafta adadin duwatsun shimfidar wurare masu girma 100 * 200, don dandalin zagaye a ƙarƙashin brazier tare da diamita 6 mita.
Mun shigar da darajar mita 6 a cikin kalkuleta don ƙididdige diamita kuma mu samu - 28,26 murabba'in. Muna fassara santimita zuwa mita kuma muna ƙididdige yanki na uXNUMXbuXNUMXbone paving dutse - 0,02 m².
Ya rage don raba yankin uXNUMXbuXNUMXb da'irar ta hanyar shimfida duwatsu: 28,26/0,02=1 guda.
Ƙididdigar da'irar za ta taimake ka don yin lissafi, kawai shigar da bayanan da ake buƙata kuma sami amsar.