Question

Oblicz pola powierzchni prostopadłościanów o wymiarach:
a)2 cm x 4.5 cm x 3.5 cm
b)11 dm x 11 dm x 11 dm
c)35 mm x 4.7 cm x 0.2 dm

Answer 1

'

4m * 7m * 2 + 2m *7m * 2 + 2m * 4m * 2 = 56m2 + 28m2 + 16m2 = 100m2

2cm * 4,5cm *2 + 4,5cm * 3,5 cm * 2 + 2cm * 3,5cm *2 = 18cm2 + 31,5cm2 + 14cm2 = 59cm2

11dm * 11dm * 6 = 121cm2 * 6 = 726

2,5cm * 4,7cm * 2 + 4,7cm * 2cm *2 + 2,5cm * 2cm *2 = 23,5cm2 + 18,8cm2 + 10cm2 = 52,3cm2

Answer 2

a) 100m2

b) 59 cm2

c) 52,3cm2