Dik : luas lingkaran 1.386
Dit : jari-jari dan diameter
Jawab :
Luas lingkaran =
1.386 cm² = x
= 1.386 cm² :
= 1.386 cm² x 7 : 22
= 441 cm²
r =
r = 21 cm
Diameter = 2 x 21 cm
= 42 cm
maaf kalau salah
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1386=22/7 kali r²
1386 kali 7/22 = r²
63 kali 7= r²
441=r²
r²=441
r= √441 = 21
diameter= 42
semoga membantu
Dik : luas lingkaran 1.386
Dit : jari-jari dan diameter
Jawab :
Luas lingkaran =
1.386 cm² = x
= 1.386 cm² :
= 1.386 cm² x 7 : 22
= 441 cm²
r =
r = 21 cm
Diameter = 2 x 21 cm
= 42 cm
maaf kalau salah