perbandingan keliling dan lebar persegi panjang 14:3 luas 192. tentukan panjang diagonal

k : l = 14 : 3
(2p+2l) x 3 = 14 x l
6p + 6l = 14l
6p = 8l
p = 8l/6

p x l = 192
8l² = 192 x 6
l² = 1.152/8 = 144
l = √144 = 12 cm

p = 8x12/6 = 96/6 = 16 cm

diagonal = √p²+l²
= √16²+12²
= √256+144
= √400
= 20 cm