Tolong di jawab please

Jawaban:

1. a. k = 2 × ( p + l )

= 2 × ( 26 + 11 )

= 2 × 37

= 74 cm

b. k = 2 × ( p + l )

= 2 × ( 27 + 14 )

= 2 × 41

= 82 cm

c. k = 2 × ( p + l )

= 2 × ( 19 + 13 )

= 2 × 32

= 64 cm

2. l = ( k : 2 ) – p

= ( 40 cm : 2 ) – 12 cm

= 20 cm – 12 cm

= 8 cm

3. a. k = 4 × s

= 4 × 11

= 44 cm

b. k = 4 × s

= 4 × 27

= 108 cm

c. k = 4 × s

= 4 × 3

= 12 cm

4. k = 4 s

36 cm = 4 s

s = 36 : 4

s = 9 cm

5. a. k = s + s + s

= 6 + 14 + 14

= 34 cm

b. k = s + s + s

= 13 + 13 +13

= 39 cm

c. k = s + s + s

= 8 + 8 + 10

= 26 cm