Question

Keliling trapesium adalah 50 cm. panjang sisi-sisi yang sejajar 9 cm dan 21 cm. berapa luas trapesium ?

Answer 1

Verified answer

Keliling trapesium sama kaki =
50 = 21 + 9 + 2s
s = 20/2
s = 10

tinggi trapesium =
√10^2-6^2 = √100-36 = √64 = 8 cm
luas trapesium =
1/2 x (21+9) x 8 = 120 cm2

GOOD LUCK

Answer 2

•) 21 + 9 + 2X = 50
30 + 2X = 50
2X = 20
X = 10
•) t = 8 (Pytagoras 6,8,10)
•) L = 30 x 8 : 2 = 120