the ladders shown below are standing against the wall at the same angle. how high up the wall does the latter go?

left ladder is height 30
right ladder is height 10

Unfortunately, without additional information, it is impossible to determine the exact height up the wall that the ladder goes. We would need to know the angle at which the ladders are inclined or the distances from the base of the ladder to the wall.

Why did European nations start looking for a water route to Asia?

A.
to gain a faster way to travel to the Holy Land

B.
to build permanent colonies in India and China

C.
to take part in the profitable trade that Italy controlled

D.
to gain information so they could make more accurate maps