adistyairianti
4) D=20 cm r=10 cm L 1/2x3,14x10x10=157 cm 5) r= 14 cm L=1/4x22/7x14x14=154
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renatajayanti
4. d = 20cm r = 10 cm ditanya : luas dan keliling ? jawab : L = πr² =3,14 ×10×10 =314 cm² K = πd/2 = 3,14×20/2 = 3,14×10 = 31,4 +20 = 51,4 cm
5. diket : r = 14 cm ditanya : 3/4 nya luas dan keliling lingkaran ? jawab : L = 3/4 πr² =3/4×22/7×14×14 =504 cm² K =3/4 πd =3/4 ×22/7×28 =72+28 = 100 cm
r=10 cm
L 1/2x3,14x10x10=157 cm
5) r= 14 cm
L=1/4x22/7x14x14=154
r = 10 cm
ditanya : luas dan keliling ?
jawab : L = πr²
=3,14 ×10×10
=314 cm²
K = πd/2
= 3,14×20/2
= 3,14×10
= 31,4 +20
= 51,4 cm
5. diket : r = 14 cm
ditanya : 3/4 nya luas dan keliling lingkaran ?
jawab : L = 3/4 πr²
=3/4×22/7×14×14
=504 cm²
K =3/4 πd
=3/4 ×22/7×28
=72+28
= 100 cm