Karkara na da'irar (kewaye da'irar) dabara kalkuleta
Circumferenc na da'irar (kewaye da'irar) dabara kalkuleta ba ka damar samun karkara (kewaye) na da'irar, da dabara, ta yin amfani da radius daga da'irar.
Kewaye kalkuleta
Find a kewaye da daban-daban na lissafi siffofi, kamar da'ira, square, murabba'i mai dari, alwatika, parallelogram, rhombus, trapezoid da daban-daban dabarbari.