tolong bantu aku jawab nomor 2 yang a,b,c pakai cara ya

2.
a.
L = ½ × JSS × t
440 = ½ × (24 + 16) × t
440 = ½ × 40t
440 = 20t
t = 440 ÷ 20
t = 22 cm

b.
L = ½ × JSS × t
620 = ½ × (24 + b) × 20
620 = (24 + b) × 10
620 = 240 + 20b
10b = 620 - 240
10b = 380
b = 38 cm

c.
L = ½ × JSS × t
648 = ½ × (24 + b) × 24
648 = (24 + b) × 12
648 = 288 + 12b
12b = 648 - 288
12b = 360
b = 30 cm

Maaf Kalau Salah

maaf ya kalo salah jawaban atau caranya