przekrój osiowy walca jest kwadratem o polu 144. Oblicz objętość tego walca.
P=144
P=a²
a²=144
a=√144
a=12
r=½a=½*12=6
H=a=12
V=πr²*H
V=π*6²*12
V=36π*12
V=432π
Dane :
P= 144
P = a² 144 = a² a = √144 a = 12
H = a H = 12 cm
r = a/2 r = 12/2 r = 6
V = πr²H V = π*6²*12 V = π*36*12 V = 432 π
Odp. Objętość tego walca wynosi 432 π
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P=144
P=a²
a²=144
a=√144
a=12
r=½a=½*12=6
H=a=12
V=πr²*H
V=π*6²*12
V=36π*12
V=432π
Dane :
P= 144
P = a²
144 = a²
a = √144
a = 12
H = a
H = 12 cm
r = a/2
r = 12/2
r = 6
V = πr²H
V = π*6²*12
V = π*36*12
V = 432 π
Odp. Objętość tego walca wynosi 432 π