Jawabanmu

2014-06-01T18:49:49+07:00
A. juring
b. busur lingkaran
c. jari jari
d. tali busur
e. tembereng

2. L1 = 20x50 = 1000
L2 = 3,14x10x10 = 314
L = L1 - L2 = 686 cm2