Tolong jawab nomor 6

6.L1= A×t ×½
=20×20×½=200cm²
L2=(p¹+p²)×t×½
=(20+26)×13×½
=299
Luas keseluruhan 299+200=499(B)
semoga membantu

Bangun Datar

L segitiga = 1/2 x a x t
= 1/2 x 20 x 20
= 10 x 20
= 200 cm^2

L trapesium = 1/2 x jml sisi sejajar x t
= 1/2 (26+20) 13
= 1/2 x 46 x 13
= 23 x 13
= 299 cm^2

L gabungan = L segitiga + L trapesium
= 200 + 299
= 499 cm^2 (B).

*semoga membantu. sukses selalu ^_^