Answer:
87.4 in
Step-by-step explanation:
Imagine a right triangle with one side the hight the other side half of the base side and the hypotenuse the slant height and use Pythagorean Theorem.
h² + (23.4/2)² = 88.2² solve for hight,
h=√88.2²- (23.4/2)² is about 87.4 in
D
I'm not 100% sure but since when you remove the square roots on a and b, you have to add it to X
