l=(x+1) p=(x-5) k=46cm. Tentukan lebar, panjang dan luas nya

K = 46
2p+2l = 46
2(x-5)+2(x+1) = 46
2x-10+2x+2 = 46
4x-8 = 46
4x = 54
x = 13,5

p = x-5 = 13,5 - 5 = 8,5
l = x+1 = 13,5 + 1 = 14,5

L = p.l = (8,5)(14,5) = 123,25 cm²