Answer:
19.5m
Step-by-step explanation:
Use the Pythagorean theorem.
a^2 + b^2 = c^2
The longest side, 35m, is c and the base of the triangle, 29m, is b.
a^2 + 29^2 = 35^2
Simplify.
a^2 + 841 = 1225
Get a by itself by adding -841 to both sides to cancel out the 841.
a^2 = 384
Find the square root of both sides to get rid of the exponent.
square root of 384 = ~19.5959
a = 19.5
