Berikut Kunci jawaban Matematika kelas 4 SD MI halaman 120:
2. a. Panjang = (Keliling – (2 × Lebar)) : 2
= (88 cm – (2 × 12 cm)) : 2
= (88 cm – 24 cm) : 2
= 64 cm : 2
= 32 cm
b. Lebar = (Keliling – (2 × Panjang)) : 2
= (156 cm – (2 × 58 cm)) : 2
= (156 cm – 116 cm) : 2
Editor: Nur Umar