oblicz pole powierzchni prostopadłościanu o wymiarach: a) 6cm,7cm,5cm............ b) 1dm,2cm,8cm...............
a) P = 2ab + 2ac + 2bc P = 2 x 6 cm + 7 cm + 2 x 6cm + 5cm + 2 x 7cm + 5cm = 26cm + 22cm + 24cm = 72cm
b) P = 2ab + 2ac + 2bc
P = 2 x 10 cm + 2 cm + 2 x 10 cm + 8 cm + 2 x 2 cm + 8 cm = 24 cm + 36 cm + 20 cm = 80 cm
A) P=2(6·7)+2(6·5)+2(5·7)=84+60+70=214cm²
B) P=2(10·2)+2(10·8)+2(2·8)=40+160+32=232cm²
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a) P = 2ab + 2ac + 2bc
P = 2 x 6 cm + 7 cm + 2 x 6cm + 5cm + 2 x 7cm + 5cm = 26cm + 22cm + 24cm = 72cm
b) P = 2ab + 2ac + 2bc
P = 2 x 10 cm + 2 cm + 2 x 10 cm + 8 cm + 2 x 2 cm + 8 cm = 24 cm + 36 cm + 20 cm = 80 cm
A) P=2(6·7)+2(6·5)+2(5·7)=84+60+70=214cm²
B) P=2(10·2)+2(10·8)+2(2·8)=40+160+32=232cm²