latihan menghitung luar dan jeliling bangun datar # tolong dong no 6 sampe no 8 pake cara

6. Dik : a = 6 , t = 6
maka, L = a x t / 2
L = 6 x 6 / 2 = 6 cm2
K = s + s + s
K = 6 + 7 + 8
K = 21 cm

7. Dik : a = 7cm , b = 9cm , t = 5 cm
maka, L = (a + b) x t / 2
L = (7 + 9 ) x 5 / 2
L = 16 x 5 / 2
L = 40cm2

8. Dik : a = 5m , b = 7m , t = 2m
maka, L = (a + b) x t / 2
L = (5 + 7) x 2 / 2
L = 12 X 2 / 2
L = 12 cm2