13
Explanation: a^2 + b^2 = c^2
12^2 + 5^2 = c^2
144 + 25 = c^2
/169 = c
c = 13
1 lap to ten minutes or 1:10 due to the fact that it takes ten minutes to run one lap. hope this helps, have a nice day :)
Step-by-step explanation:
first, the other 2 angles in the triangle must be equal.
and they must both be complementary to 180 degrees for the 108 degree angle.
180 - 108 = 72 degrees.
so, we have 72, 72 and m degrees as degrees in the triangle.
the sum of all the angles in a triangle is always 180 degrees.
72 + 72 + m = 180
144 + m = 180
m = 36 degrees
