Question

Tolong dijawab ya beserta jalannya !
nomor satu yg di lingkarin itu

Answer 1

A. panjang = 9 cm, lebar = 4 cm
Keliling = 2 (p+l) = 2(9+4) =2x13 = 26 cm
Luas 9 x 4 = 36 cm²
b. panjang = 10 cm, lebar = 7 cm
Keliling = 2 (p+l) = 2(10+7) = 2x17 = 34 cm
Luas 10 x 7 = 70 cm²
c. panjang = 12 cm, lebar = 10 cm
Keliling = 2 (p+l) = 2(12+10) = 2x22 = 44 cm
Luas 12 x 10 = 120 cm²

Answer 2

jawaban a
k = 2 (p + l)
   = 2 (9 + 4)
   = 2 x13
   = 26
luas = p x l
         = 9 x 4
         = 36
jawaban b
k = 2 (10 + 7)
   = 34
luas = 10 x7
         = 70
jawaban c
k = 2 (12 + 10)
   = 2 x 22
   = 44
luas = 12 x 10
         = 120