jawaban tugas matematika

1.??? Lupa soalnya…???

2. L = 1/2 x diagonal 1 x diagonal 2
96 cm2 = 1/2 x 12cm x diagonal 2
diagonal 2 = (96 cm2 / 1/2) / 12 cm
diagonal 2 = 192 cm2 / 12 cm
diagonal 2 = 16 cm

3. L = 1/2 x diagonal 1 x diagonal 2
L = 1/2 x 18 cm x 8 cm
L = 72cm2

4. L = (10 cm + 15 cm)/2 x 12 cm
L = 25 cm/2 x 12cm
L = 12.5 cm x 12 cm
L = 150 cm¬¬¬2