Jawabanmu

2014-06-09T09:06:51+07:00
K = 2 x pi x r
176 = 2 x 22/7 x r
176 x 7/44 = r
28 = r

2014-06-09T09:11:46+07:00
Kll lingkaran=π d
176=22/7 * d
176*7/22=d
56=d
r=56/2
r=28cm
jadi jari jari lingkaran=28cm