Hitunglah keliling dan luas persegi panjang dengan ukuran sebagai berikut. a.panjang=18cm dan lebar=12cm b.panjang=25cm dan lebar=16cm c.panjang=30cm dan lebar=15cm
belindaputriaulia
A. L = p x l = 18 x 12 = 216 cm kuadrat keliling = 2p x 2l = 2(18) x 2(12) = 36 x 24 = 864 cm
b. L = p x l = 25 x 16 = 400 cm kuadrat keliling = 2p x 2l = 2(25) x 2(16) = 50 x 32 = 1600 cm
c. L = p x l = 30 x 15 = 450 cm kuadrat keliling = 2p x 2l = 2(30) x 2(15) = 60 x 30 = 1800 cm
keliling = 2p x 2l = 2(18) x 2(12) = 36 x 24 = 864 cm
b. L = p x l = 25 x 16 = 400 cm kuadrat
keliling = 2p x 2l = 2(25) x 2(16) = 50 x 32 = 1600 cm
c. L = p x l = 30 x 15 = 450 cm kuadrat
keliling = 2p x 2l = 2(30) x 2(15) = 60 x 30 = 1800 cm