a adam: Oblicz objętość i pole całkowite prostopadłościanu o wymiarach: a) 4cm X 20 cm X 1m b) 0,3m X 6 cm X 20 dm c) 2mm X 30m X 5 dm d) 300 m X 0,5 km X 60 mm

bezendu: https://matematykaszkolna.pl/strona/962.html

adam: nie wiem:(

Janek191: Np. a) a = 4 cm, b = 20 cm , c = 1 m = 100 cm V =a*b*c = 4 *20*100 = 8 000 V = 8 000 cm³ ============ P_c = 2*( a*b + a*c + b*c) P_c = 2*( 4*20 + 4*100 + 20*100) = 2*( 80 + 400 + 2000 ) = 2* 2 480 = 4 960 P_c = 4 960 cm² ==============

Janek191: Np. a) a = 4 cm, b = 20 cm , c = 1 m = 100 cm V =a*b*c = 4 *20*100 = 8 000 V = 8 000 cm³ ============ P_c = 2*( a*b + a*c + b*c) P_c = 2*( 4*20 + 4*100 + 20*100) = 2*( 80 + 400 + 2000 ) = 2* 2 480 = 4 960 P_c = 4 960 cm² ==============