Question

Tolong bantu pake cara yah nmer 11 dan 12 ..

Answer 1

11) K = 60 
 
 Perbandingan p dan l = 3 : 2
 maka, p = 3x
           l = 2x

K = 2p + 2l
60 = 2(3x) + 2(2x)
60 = 6x + 4x
10x = 60
   x = 60/10
   x = 6

p = 3.6
   = 18 cm

l = 2.6
  = 12 cm

L = p x l
   = 18 x 12
   = 216 cm²

12)