yang baik tolongi nya nomer 16,17

16=d.64cm
17=c.26
maaf kalau salah

16. mencari luas persegi
= 8 x 8
= 64 cm²

mencari nilai x
L = 4 (3x - 2)
64 = 12x - 8
12 x = 64 - 8
12 x = 56
x = 56/12
x = 4,67

mencari K persegi panjang
= 2 x (p + l)
= 2 x (3x-2 +4)
= 2 x (3(4,67) + 2 )
= 2 x (14 + 2)
= 2 x 16
= 32 cm
(B)

17. mencari nilai x
AC = BD
2x + 7 = 5x - 2
2x - 5x = -2 - 7
- 3x = - 9
3x = 9
x = 9/3
x = 3

panjang AC
= 2x + 7
= 2(3) + 7
= 6 + 7
= 13

panjang CB
=√AC² - AB²
=√13² - 12²
=√169 - 144
=√25
= 5 

K persegi panjang
= 2 x (p+l)
= 2 x (AB + BC)
= 2 x (12 + 5)
= 2 x 17
= 34 cm
(D)