No 4 & 5 tolong di jawab

No 4 & 5 tolong di jawab

Jawaban:

1. b

2. b

Penjelasan dengan langkah-langkah:

1. cos 30° = LM/26

1/2√3 = LM/26

LM = 26 x 1/2√3

= 13√3cm

$kl : = sqrt{ {26}^{2} - ({13 sqrt{3}) }^{2} } \ = sqrt{676 - 507} \ = 13cm$

2. keliling persegi = 4 x s

24 = 4 x s

s = 24/4

= 6cm

diagonal persegi = s√2

= 6√2 cm

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