Bantu kak, pake cara yaa​

Penjelasan dengan langkah-langkah:

1

a. AD = AB = 12 cm

b. Lj = 45/360 x 3,14 x (20/2)²

= ⅛ x 314

= 39,25 cm²

c. L.Tembereng = 10²/2 – Lj

= 50 – 39,25

= 10,75 cm²

2.

a. AP = √(37² – 12²) = √(37-12)(37+12)

AP = √(25)(49)

AP = 5(7) = 35 cm

b. Luas layang² = 12 x 35 = 420 cm²