L=...cm no 1 sama no 2 pake cara ya mksh banyak.

1.dik =panjang=80 cm
         =lebar=60 cm
   dit =L?
   jawab?
L=pxl
  =80x60
  4800 cm2

2.dik=L=2.500
   dit=salah satu sisi (AB)\
   jawab?
L=sxs
2.500=s2
√2500=s
50 =s
50 cm =AB

1. L = p x l
=80 x 60
=4.800
L=4.800 cm2

2. 2.500 : 50
=50
Bukti ; L = s x s = 50 x50 = 2.500

Maaf kalo salah..........