Question

Oblicz pole i objetosc prostopadłoscianu o wymiarach 3 cm, na 12 cm, na 20 cm

Answer 1

P=2*a*b+2*a*c+2*b*c

a=3cm

b=12cm

c=20cm

P=2*3cm*12cm+2*3cm*20cm+2*12cm*20cm

P=72cm²+120cm²+480cm²

P=672cm²

 

V=a*b*c

V=3cm*12cm*20cm

V=720cm³