The answer is 308.6, assuming you mean round it to the tenths place of course. :) The first digit to the right of the decimal place in any number is the tenths place, but if the number directly to the right of that is above 5, you must round it up. In this case, because it is 308.61, you need to round it down to 308.6
Edited because for some reason I read it as 306.61 instead of 308.61.
Method 1.
Use the formula of a distance between two points:

We have

substitute

Answer: 10
Method 2
Look at the picture.
Use the Pythagorean theorem:

Answer: 10
Answer:
Trigonometric functions are used in obtaining unknown angles and distances from known or measured angles in geometric figures. Trigonometry developed from a need to compute angles and distances in such fields as astronomy, mapmaking, surveying, and artillery range finding.
Answer:
a 2
im not 100% sure though
Step-by-step explanation:
The answer could be 32^(-2)