hitunglah diameter jika luas lingkaran 542

[tex]luas = \pi \times {r}^{2} \\ 542 = \frac{22}{7} \times {r}^{2} \\ \frac{542 \times 7}{22} = {r}^{2} \\ 172.45 = {r}^{2} \\ 13.13 = r \\ 26.26 = d[/tex]

Luas lingkaran = π . r²
542 = 3,14 . r²
r² = 542/3,14
= 172,61
r = √172,61
= 13,13
r = Diameter / 2
Diameter = r x 2
= 26,26

(Hasil mungkin bervariasi, karena aku cuma pake 2 angka dibelakang koma)