Question

Kebuk Pak Joni berbentuk persegi panjang.Perbandingan panjang dan lebar kebun tersebut 4:3.Jika keliling kebuk pak joni 140 meter,berapakah diagonal kehun tersebut?

Answer 1

2(p+l) = 140m
2(4x+3x) = 140m
14x = 140m
x = 10

p = 4(10) = 40m
l = 3(10) = 30m

diagonal = p^2 + l^2
= 40^2 + 30^2
= 1600 + 900
= 2500
= 50m

Answer 2

4x:3x
k = 2(4x) + 2(3x)
140 = 8x + 6x
140 = 14x
x = 10

4x = 4(10) = 40
3x = 3(10) = 30

d² = 40² + 30²
d² = 1600 + 900
d² = 2500
d = √(2500) = 50

jadi diagonal kebun adalah 50 meter