Jawab:
Penjelasan dengan langkah-langkah:
Bangun A = persegi
Keliling A = 4 x sisi
= 4 x 10 cm = 40 cm
Bangun B = Persegi panjang
p = 25 cm ; l = 15 cm
Keliling B = 2 (p + l)
= 2 ( 25+15)cm = 2( 40) cm = 80 cm
Bangun c = Persegi panjang
p = 52 cm ; l = 25 cm
Keliling C = 2(p + l)
= 2 (52 + 25) cm = 2(77) cm = 154 cm
Bangun D
p= 27 cm; l =16 cm
Keliling D = 2(p + l)
= 2 (27 + 16) cm = 2 (43) cm = 86 cm
Bangun E
s = 15 cm
Keliling E = 4 x s
= 4 x 15 cm = 60 cm
Bangun F
p = 36 cm; l = 12 cm
Kelilng F = 2(p + l)
= 2 (36 + 12) cm = 2(48) cm = 98 cm
Bagian A
K = 4s
K = 4 × s
K = 4 × 10 cm
K = 40 cm
____________________
Bagian B
K = 2 ( p + l )
K = 2 ( 25 cm + 15 cm )
K = 2 ( 40 cm )
K = 80 cm
____________________
Bagian C
K = 2 ( p + l )
K = 2 ( 52 cm + 25 cm )
K = 2 ( 77 cm )
K = 154 cm
____________________
Bagian D
K = 2 ( p + l )
K = 2 ( 27 cm + 16 cm )
K = 2 ( 43 cm )
K = 86 cm
____________________
Bagian E
K = 4s
K = 4 × s
K = 4 × 15 cm
K = 60 cm
____________________
Bagian F
K = 2 ( p + l )
K = 2 ( 36 cm + 12 cm )
K = 2 ( 48 cm )
K = 96 cm
_____________________
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