If earth had twice its present mass, but the same radius, the force of gravity would be:

a) twice as big b) four times as big c) half as big d) the same

Most like twice as big because if Earth was twice as big, the gravity would not be able to hold us down. In conclusion, the same thing would happen for the radius which keeps us from the dangers of outer space.

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