tolong dong pr besok

masih dicoba yaa..

L dinding = ( 2 × p × t ) + ( 2 × l × t )
= ( 2 . 9 . 4 ) + (2 . 7 . 4 )
= 72 + 56
= 128 m^2

Rp 50.000 . 128 m^2 = Rp. 6.400.000 (B)

L dinding= (2x panjang x tinggi)+ (2x lebar x tinggi )
= (2x 9x4)+(2x7x9)
= 72+56
= 128 meter²
=RP. 50.000 . 128 m²
= B. 6.400