Đổi 1 dm = 10 cm
Diện tích hình thang là :
( 10 + 18 ) x 8 : 2 = 112 ( cm2 )
Đáp số : 112 cm2
đáp án là 112 cm2
dung 100000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000%
mình thì violympic rồi
112 nha mình làm đúng trên violmypic rùi