10.jenjang siku luas 250 jika panjang alas ..... 11.keliling segitiga siku adalah 56cm.......

10.
Luas jajargejang=250 cm²
a.t= 250 cm²
5x.2x= 250 cm²
10x²= 250 cm²
x²=25
x=√25
x=5

11.
K segitiga=56
x+3x+3+4x-3=56
8x=56
x=7

sisi 1
=x=7 cm

sisi 2
=3x+3=3.7+3=24 cm

sisi 3
=4x_3=4.7-3=25 cm

Luas segitiga
=1/2.a.t
=1/2.7.24
=7.12
=84 cm²

semoga membantu :)

10. Luas = a X t
250 = 2x X 5x
250 = 10x^2
250/10 = x^2
x = akar 25
x = 5
11. x + (3x + 3) + (4x - 3) = 5
8x = 56
x = 7
3x + 3 = 3.7 + 3 = 24
4x - 3 = 4.7 - 3 = 25
Luas =1/2 X a X t
= 1/2 X 24 X 7 = 84 cm persegi