Tolong di bantu ya,sertakan caranya..

3. L = a×t/2 = 60×40/2 = 2400/2 = 1200 cm².
4. L = a×t = 10×8 = 80 cm².



maaf aku cuma bisa jawab itu saja

3.
Luas = a x t : 2
= 60 x 40 : 2
= 60 x 20
= 1200 cm²

4.
Luas = a x t
= 10 x 8
= 80 m²

5.
Luas = d1 x d2 : 2
= 10 x 24 : 2
= 10 x 12
= 120 cm²

6.
Luas = d1 x d2 : 2
= 21 x 16 : 2
= 21 x 8
= 168 cm 2

7.
Luas = AC x BD : 2
250 m = AC x 20 cm : 2
500 m = AC x 20cm
50.000 cm = AC x 20 cm
50.000 : 20 = AC
2500 = AC