Answer:
x= 21
Step-by-step explanation:
Given data
First triangle : a1=72, b1= x , c1=75
Second triangle : a2= 24, b2= 7, c2=25
If two triangles are similar, the corresponding sides are proportional:
a1 : a2 = b1 : b2 = c1 : c2
This is triple proportion, but we will use selected double:
a1 : a2 = b1 : b2 => 72 : 24 = x : 7
When we multiply the external and internal members we get:
7 · 72 = 24 · x => x= 7 · 72/ 24 = 7· 3 = 21
x = 21
God with you!!!
