Question

Keliling sebuah belah ketupat 52cm panjang salah satu diagonalnya 24cm. p.diagonal yg lain? thank youu +rumus yg gmpang yaa hehehe

Answer 1

Kel. Belah ketupat = 4s
52 cm = 4 * s
52 cm / 4 = s
s = 13 cm

1/2d2² = s² - 1/2d1²
          = 13² - 12²
          = 169 - 144
1/2d2 = √25
1/2d2 = 5
d2 = 10 cm

Answer 2

K = 4s --> s = K/4 = 52/4 = 13 cm (sisi miring segitiga siku-siku)

13² = (d₁/2)² + (d₂/2)²
13² = (24/2)² + (d₂/2)²
d₂/2 = √169 - 144 = √25 = 5
d₂ = 5 x 2 = 10 cm