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Perhatikan gambar berikut. Tentukan panjang QR!

Perhatikan gambar berikut.
Tentukan panjang QR!

Perhatikan gambar berikut. Tentukan panjang QR!

Jawaban untuk soal ini adalah 6 cm

Ingat!
Rumus teorema phytagoras
c² = a² + b²
dengan
a,b = merupakan sisi-sisi lain yang saling tegak lurus
c = merupakan sisi terpanjang pada suatu segitiga siku-siku (sisi miring/hipotenusa)

Pembahasan
Perhatikan segitiga TRS, cari panjang TR terlebih dahulu

ST² = TR² + SR²
10² = TR² + 8²
100 =TR² + 64
TR² = 100 – 64
TR = ±√36
TR = ± 6 cm

karena panjang sisi segitiga tidak mungkin negatif maka TR = 6 cm

Perhatikan segitiga TPR
Mencari panjang TQ

PQ² = TQ² + TP²
13² = TQ² + 5²
169 = TQ² + 25
TQ² = 169 – 25
TQ²= 144
TQ = ±√144
TQ = ± 12 cm

karena panjang sisi segitiga tidak mungkin negatif maka TQ = 12 cm

QR = TQ – TR
= 12 – 6
= 6 cm

Jadi, panjang QR adalah 6 cm

Baca Juga :  Task 2 Practice the following dialogue with your classmate! After that, underline the pronoun found in t dialogue below! Suzy : "I don't think we've met. I'm Suzy. (hold out hand to shake)." Carl : "Hi Suzy. I'm Carl." Suzy : "Hi Carl. So, how do you know Jim?" Carl : "Oh, Jim and I used to work together at a book store." Suzy : "Oh, you mean when you were working in Japan?" Carl : "That's right. And how do you know him?" Suzy : "Actually, Jim is my cousin. Our moms are sisters." Carl : "No way! You two don't look anything alike." Task 3 Answer the questions based on the dialogue above! Have Suzy and Carl met before? 1. Answer:. How did Carl know Jim? 2. 3. 4. 5. Answer: Where has Carl and Jim worked together? Answer: Mention one expression of self introduction! Answer: Who is Jim according to Suzy? Answer: ***Ess​