jawab dong yang no 2 sama 3

1. panjang 52 cm dan keliling 170 cm
Lebar ...?
keliling = 2p+2l
170 = 2(52)+2l
__________ : 2
85 = 52 + l
85 - 52 = lebar
33 cm = lebar

2. lebar 40 cm dan keliling 192 cm
panjang ...?
keliling = 2p+2l
192 = 2p+2(40)
___________ :2
96 = p + 40
96 - 40 = panjang
56 cm = panjang

3. panjang 100 cm dan keliling 312 cm
lebar ...?
keliling = 2p+2l
312 = 2(100)+2l
___________ :2
156 = 100 + l
156 - 100 = lebar
56 cm = lebar


semoga membantu yaa;)