bangun abcd dan aefg sebangun, luas bangun abcd adalah.. a. 60cm² b. 375cm² c. 750cm² d. 1.500cm²

1. cari ab

ab/36 = 25/20
ab= 5/4 .36
= 45 cm

2. cari cd

cd/24 = 25/20
cd= 5/4 . 24
= 30 cm

3. cari tinggi
t= √(25^2 -(45-30)^2)
= √(25^2 - 15^2)
=√(400)
= 20cm

4.luas trapesium abcd

l= (ab+ cd)/2 . tinggi
= (45+30)/2 .20
=(45+30).10
=750 cm^2

semoga mmbantu