Question

Yang a dan b apa yaa , yg b juga ada L nya yaa... jangan lupa

Answer 1

A ) K = s + s + s + s
     K = 4 + 4 + 6 + 6 = 20 cm

    L = 
  
    L =  = 36

B) K = s + s +s + s
    K = 3 + 18 + 3 + 10 = 34 cm
    
    L = x a + b x t
    L = x10 + 18 x 4
    L = x 112
    L = 56 

    semoga membantu

Answer 2

A.) K= AB+ BC+ CD+ AD
6 cm + 4 cm + 6 cm + 4 cm= 20 cm
L= 1/2 x d1 x d2=
= 1/2 x 6 cm x 12 cm
= 1/2 x 72 cm = 36 cm persegi
b.) K= AB + BC + CD + AD
= 18 cm + 4 cm + 10 cm + 4 cm
= 36 cm
L= 1/2 x (AB + CD) x tinggi
= 1/2 x (18 cm + 10 cm) x 4 cm
= 1/2 x 28 cm x 4 cm
= 1/2 x 112= 56 cm persegi.
semoga bermanfaat.