Answer:
distance between a and b = 92.2
Explanation:
let the distance between a and b is the hypotenuse, h and
a and b are the legs of the right angled triangle,
h² = a² + b²
h² = (-60)² + (70)²
h² = 3600 + 4900
h² = 8500
h = √8500 = 92.2
distance between a and b = 92.2