Please answer the question on the picture

Idon't know it i just need my points lol

Iassume the answer is 75 feet. inwards to outwards rather than outwards to inwards. probably be 75.hachures are stokes drawn in direction of the steepest slope. a series of short parallel lines drawn on a map to indicate topographic relief. it is actually called hachures on contour lines. the small marks in the center of the feature are called hachures.observe the picture attached

The inference is supported by evidence in the graph is this is an exothermic reaction where the total release of energy equals a + c.