Jawaban: 70 cm
22/7×70×70
:22×10×70
=3850 cm²
Luas lingkaran = 3.850 cm²
Panjang diameter?
Luas = π × r²
3.850 = 22/7 × r²
3.850 : 22/7 = r²
3.850 × 7/22 = r²
26.950/22 = r²
1.225 = r²
√1.225 = r
35 = r
r = 35 cm
d = 2r = (2 × 35) cm = 70 cm
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Jawaban: 70 cm
22/7×70×70
:22×10×70
=3850 cm²
Verified answer
Diketahui :
Luas lingkaran = 3.850 cm²
Ditanya :
Panjang diameter?
Dijawab :
Luas = π × r²
3.850 = 22/7 × r²
3.850 : 22/7 = r²
3.850 × 7/22 = r²
26.950/22 = r²
1.225 = r²
√1.225 = r
35 = r
r = 35 cm
Maka :
d = 2r = (2 × 35) cm = 70 cm
Semoga membantu.
Sukses selalu.