Answer:
77 us dollar
Step-by-step explanation:
because I used a calculator
77
all work is shown and pictured
72
u can see its a right triangle u can see its kinda like 3-4-5 right triangle
75/5 = 15
21/3 = 7
ok so it doesn't work
now
75^2 - 21^2 = 5184
square root of 5184 = 72
