Question

Jika keliling belah ketupat 20 cm dan perbandingan panjang diagonal 3:4.tentukan panjang diagonal masing-masing?
pakai jalan ya!!

Answer 1

Keliling = 20
4s = 20
s = 5

perbandingan
d1:d2 = 3x:4x

(½d1)² + (½d2)² = s
(½.3x)² +(½.4x)²= 5²
2,25x² + 4x²=25
6,25 x² = 25
x² = 25/6,25
x² = 4
x = 2

d1 = 3x = 3.2 = 6
d2 = 4x = 4.2 = 8