Question

A 100-foot ramp is tilted at a 45° angle. How high is the top of the ramp from the ground?

Answer 1

check the picture below.

now, let's rationalize the denominator.


`\bf \cfrac{100}{√(2)}\cdot \cfrac{√(2)}{√(2)}\implies \cfrac{100√(2)}{√(2^2)}\implies \cfrac{100√(2)}{2}\implies 50√(2)`