Oblicz pole powierzchni prostopadlościanu o wymiarach - 4m ,2dm ,8dm
Dane :
a = 4m
b = 2 dm = 20 cm = 0,2 m
c = 8 dm = 80 cm= 0,8 m
Pc = 2Pp + Pb
Pp = a * b = 4 * 0,2 = 0,8 m²
Pb = 2 ( a*c ) + 2 (b*c)
Pb = 2 (4 * 0,8) + 2 (0,2 * 0,8) = 2 * 3,2 + 2 * 0,16 = 6,4 + 0,32 = 6,72 m²
Pc = 2 * 0,8 + 6,72 = 1,6 + 6,72 = 8,32 m²
Odp. Pole całkowite wynosi 8,32 m²
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Dane :
a = 4m
b = 2 dm = 20 cm = 0,2 m
c = 8 dm = 80 cm= 0,8 m
Pc = 2Pp + Pb
Pp = a * b = 4 * 0,2 = 0,8 m²
Pb = 2 ( a*c ) + 2 (b*c)
Pb = 2 (4 * 0,8) + 2 (0,2 * 0,8) = 2 * 3,2 + 2 * 0,16 = 6,4 + 0,32 = 6,72 m²
Pc = 2 * 0,8 + 6,72 = 1,6 + 6,72 = 8,32 m²
Odp. Pole całkowite wynosi 8,32 m²