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r=7, t=10
t balok=?
luas lingkaran= πr²t
luas balok= luas lingkaran
plt= 1540cm²
10.7t= 1540
t=
jadi tinggi balok tsb 22 cm
4. volume tabung=365cm³
r=3,5 cm
t=?
volume= πr²t
365=
365= 11.3,5t
t=
5. v= 1100cm³
t= 14
r=?
v= πr²t
1100=
1100= 44r²
r²=
r= √25
r= 5