tolong di jawab yaaaa

a.
[tex]k = 2(p + l) \\ 50 = 2( \frac{3}{2} l + l) \\ \frac{50}{2} = \frac{3}{2} l + \frac{2}{2} l \\ 25 = \frac{5}{2} l \\ l = 25 \times \frac{2}{5} \\ l = 10[/tex]

[tex]p = \frac{3}{2} l \\ p = \frac{3}{2} \times 10 \\ p = 15[/tex]

maka p = 15 cm dan l= 10cm

b.
luas = p × l
luas = 15 × 10 = 150 cm^