Jawabanmu

2014-06-06T20:14:04+07:00
L=D1xD2/2
 960=60xd2/2
D2= 32

lalu phitagoras 16^2 + 30^2 =289 =>> 17
keliling 17x 4 = 68
68 ato 136 yaa??
aku yakin 68
oke sip, makasih :))
2014-06-06T20:15:15+07:00
Diagonal AC= 60cm
luas 960cm²
diagonal BD = 960/ 1/2×60 = 32 cm
AD = (1/2 × 60)² + (1/2 × 32)² = 34
keliling = 4× AD = 4 × 34 = 136 cm