Berapa cm diameter lingkaran jika luasnya 1,54 dm

diameternya adalah  14 cm

L lingkaran = 1,54 [tex]dm^{2} [/tex] : 100 = 0.0154 [tex]cm^{2} [/tex]

r = [tex] \sqrt{0.0154 x \frac{7}{22} } [/tex] = [tex] \sqrt{0.0049} [/tex] = 0.07 cm
d = 0.07 x 2 = 0.14 cm