Pole powierzchni kuli (sfery) wynosci 36 Pi. Oblicz długość srednicy tej kuli ?
P=36π
φ=?
φ=2r
r=?
4πr²=36π
r²=9
r=3
φ=2*3
φ=6
P=4pir^2
36pi=4pir^2 /4pi
9=r^2
d=6
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P=36π
φ=?
φ=2r
r=?
4πr²=36π
r²=9
r=3
φ=2*3
φ=6
P=4pir^2
36pi=4pir^2 /4pi
9=r^2
r=3
d=6