Jawapan

2016-09-13T16:19:07+08:00
Lilitan= 2 pi j
    132=2×22/7×j
         = 44/7×j
132×7/44=j
21=j
2016-09-13T16:27:33+08:00
Jawapan yg dlm gambar tu salah...bwh ni jawapan yg betul...sorry

circumference=2 pai r
2×22/7×r=132
44/7×r=132
r=132÷44/7
r=21