luas bangun diatas adalah...cm

Luas
= 1/2 × ( a + b ) × t
= 1/2 × ( 50 + 25 ) × 12
= 1/2 × 75 × 12
= 450 cm2

L trapesium= jumlah sisi sejajar*tinggi/2
=(25+50)*12/2
=75*6= 450cm^2