jawapin dong pertanyaan yg cepat

nomor 51 isinya 36 menit

51 ) Waktu
= 30 km ÷ 50 km/jam
= 0,6 jam
= 36 menit

52 ) Keliling belah ketupat
= 4 × s
= 4 × 19
= 76 cm

53 ) Luas trapesium
= 1/2 × ( a + b ) × t
= 1/2 × ( 20 + ( 20 + 9 + 9 ) ) × 12
= 1/2 × ( 20 + 38 ) × 12
= 1/2 × 58 × 12
= 348 cm2