Question

help me please please gua kaga paham ​

Answer 1

Jawaban:

1) AC² = √AB² - BC² , AB = AB² = √AC² + BC²

2) 60cm²

3) 24cm

4) 24√3cm

5) Segitiga Lancip

Penjelasan dengan langkah-langkah:

1)

• AC² = √AB² - BC²
• AB =

AB² = √AC² + BC²

2)

• PR = 13cm
• QR = 10cm
• SR = 5cm
• PS =

PS² = √13² - 5²

PS² = √169 - 25

PS² = √144

PS = 12cm

Luas = a × t /2

= 10 × 12 /2

= 60cm²

3)

• AB = 8cm
• CB = 6cm

CA² = √8² + 6²

CA² = √64 + 36

CA² = √100

CA = 10cm

• DC = 26cm
• CA = 10cm

AD² = √26² - 10²

AD² = √675 - 100

AD² = √576

AD = 24cm

3)

• 30° : 60° : 90° = 1 : √3 : 2
• PR (30°) = 6cm

RQ (60°) = 1 : √3

RQ = 6 × √3

RQ = 6√3

PQ (90°) = 1 : 2

PQ = 6 × 2

PQ = 12cm

Keliling = 12cm + 6√3 + 6 = 24√3cm

4) Segitiga ABC

• AB (Sisi Tegak) = 15cm
• BC (Sisi Alas) = 12cm
• AC (Hipotenusa/Miring) = 8cm

Jenisnya =

= 15² + 12² ... 8²

= 225 + 144 .... 64

= 369 .... 64

= 369 < 64

Jadi itu adalah segitiga lancip karena jika c² < a² + b² adalah Segitiga Lancip