Jawabannya apa? bntu:)

1)

p = 52 cm

K = 170 cm

K = 2p + 2l

170 = 2(52) + 2l

170 = 104 + 2l

2l = 170 – 104

2l = 66

l = 33 cm

2)

l = 40 cm

K = 192 cm

K = 2p + 2l

192 = 2p + 2(40)

192 = 2p + 80

2p = 192 – 80

2p = 112

p = 56 cm

3)

p = 100 cm

K = 312 cm

K = 2p + 2l

312 = 2(100) + 2l

312 = 200 + 2l

2l = 312 – 200

2l = 112

l = 56 cm