Tentukan panjang sisi y dari segitiga siku-siku berikut.

Rumus :
s² = r² + t²
r² = s² – t²
t² = s² – r²

6² = (5y)² – (4y)²
36 = 25y² – 16y²
36 = 9y²
y² = 36/9
y² = 4
y = √4
y = 2

Jadi,
5y = 5.2 = 10
4y = 4.2 = 8

15² = (5y)² – (4y)²
225 = 25y² – 16y²
225 = 9y²
y² = 225/9
y² = 25
y = √25
y = 5

Jadi,
5y = 5.5 = 25
4y = 4.5 = 20

13² = (12y)² + (5y)²
169 = 144y² + 25y²
169 = 169y²
y² = 169/169
y² = 1
y = √1
y = 1

Jadi,
12y = 12.1 = 12
5y = 5.1 = 5