980м2=...м2 ... дм2 8700дм2=...м2 20700см2=...м2...дм2 2м291см=..см2
980m² = 9800000 cm² = 98000dm² 8700dm² = 87m² 20700cm² = 2,07m² = 0,0207dm² 2m291cm² = 20921cm²