1/555 of a mile. I did this by figuring out how many seconds it would take her to walk a full mile and then got the answer for 1 second
angle of triangle is 180°
the angle beside 70° is 70°also because it has mention it is an isosceles triangle so that the two angle must be same
third angle will be 180°-70°-70°=40°
U can round 289 to 290 and round 7 to 5 or 10
