Answer:
~11.34
Step-by-step explanation:
to find this out you must use the pythagorean theorem to find the length of line ad and line dc
for ad:
7.5^2 = 6.5^2 + x^2
14 = x^2
x = sqrt(14) = 3.74165739
for dc:
10^2 = 6.5^2 + y^2
57.75 = x^2
x = sqrt(57.75) = 7.59934208
now you add them
3.74165739 + 7.59934208 = 11.3409995 which is ~11.34
