Pliss ka tolong dijawab sekarang pake caranya

1) K = 2 x (Sisi a + Sisi b)
= 2 x (20 + 10)
= 2 x 30 = 60 cm (c)

2) K = 2 x (Sisi a + sisi b)
= 2 x (75 + 30)
= 2 x 105 = 210 dm (b)

3) L = a x t
= 10 x 7 = 70 [tex] cm^{2} [/tex] (b)

4) K = 2 (KL + LM)
24 = 2 (5 + LM)
24 = 10 + 2 LM
24 - 10 = 2 LM
14 = 2 LM
LM = [tex] \frac{14}{2} [/tex]
LM = 7 cm (b)