a)
V=abc
a=20 cm=2 dm
b=40 cm=4 dm
c=30 cm=3 dm
V=2*4*3=24 dm³
b)
P=2ab+2ac+2bc
P=2*2*4+2*2*3+2*4*3
P=16+12+24
P=52 dm²
Przyjmijmy, że:
a=20cm=2 dm
H=40 cm= 4 dm
b=30 cm= 3 dm
a) V=abH
V=2*3*4=24 dm³
b)P=2ab + 2 bH+ 2aH
P=2*2*3 + 2*3*4 + 2*2*4=12 + 24 + 16= 52 dm²
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1dm=10cm
20cm=2dm
40cm=4dm
30cm=3dm
V=2dm*4dm*3dm=24dm^3
b)
2* (2dm*4dm+2dm*3dm+4dm*3dm) = 2* (8dm^2+6dm^2+12dm^2) = 2*26dm^2=52dm^2
a)
V=abc
a=20 cm=2 dm
b=40 cm=4 dm
c=30 cm=3 dm
V=2*4*3=24 dm³
b)
P=2ab+2ac+2bc
P=2*2*4+2*2*3+2*4*3
P=16+12+24
P=52 dm²
Przyjmijmy, że:
a=20cm=2 dm
H=40 cm= 4 dm
b=30 cm= 3 dm
a) V=abH
V=2*3*4=24 dm³
b)P=2ab + 2 bH+ 2aH
P=2*2*3 + 2*3*4 + 2*2*4=12 + 24 + 16= 52 dm²