Sagot :
Answer:
P = 2s1 + 2s2
250 = 2(10x - 5) + 2(5x + 10)
250 = 20x - 10 + 10x + 20
250 - 10 = 30x
240 = 30x
8 = x
side 1 : 10x - 5
side 1 : 10(8) - 5
side 1 = 80 - 5
side 1 = 75 cm
side 2 : 5x + 10
side 2 : 5(8) + 10
side 2 : 40 + 10
side 2 : 50 cm
hope it helps !