The baseball diamond at a playground is a square with sides that measure 80 feet. About how long would a straight line be from home plate to second base? Round your answer to the nearest tenth.

Asap! i'm not good math and i'm lost.

Write the standard form of an equation with (see picture below)

Two trains leave stations 546 miles apart at the same time and travel toward each other. one train travels at 95 miles per hour while the other travels at 115 miles per hour l. how long will it take for the two trains to meet