kebun bentuk trapesium luas 500cm2,sisi sejajar 35 cm &15cm,berapa lebar kebun tsb?

Lebar kebun = 10 akar 5 cm

L = (35+15)/2 x t
500 = 50/2 x t
500 = 25 x t
t = 500/25
t = 20 cm

s ^2 = 20^2 + 10^2
s^2 = 400 + 100
s^2 = 500
s = √500
s = 10√5

lebar kebun = 10√5 cm