Jawaban:

A.

11. diket : L = 64 cm²

ditanya s = ...?

jawab : L = s × s

64 = s²

S = √64

= 8 cm, jawabannya c

12. L = s × s

= 12 × 12

= 144 cm², jawabannya d

13. k = 2 × ( p + l )

= 2 × ( 18 + 9 )

= 2 × 27

= 54 cm, jawabannya c

14. L = p × l

= 16 cm × 6 cm

= 96 cm²

k = 2 × ( p + l )

= 2 × ( 16 + 6 )

= 2 × 22

= 44 cm, jawabannya d

15. L = p × l

= 7 cm × 3 cm

= 21 cm², jawabannya d

16. diket : k = 36 cm

ditanya s = ...?

jawab : k = 4 × s

36 = 4 × s

S = 36 : 4

= 9 cm, jawabannya b

17. k = s + s

= 6 + 6

= 12 cm, jawabannya a

B.

1. k = 2 × ( p + l )

= 2 × ( 9 + 8 )

= 2 × 17

= 34 cm

2. k = 4 × s

= 4 × 256

= 1.024

3. k = 4 × s

= 4 × 14

= 56 cm

Penjelasan dengan langkah-langkah:

maaf cuma sebisannya