sends water out in a circular pattern . how large is the watered area if the radius of the water pattern is 20ft

Which equation and solution can be used to solve this problem? thirteen less than a number is sixteen. 13-n=16: add 13 to both sides. the answer is 29. n+13=16: subtract 13 from both sides. the answer is 3. n+16=13 subtract 13 from both sides. the answer is 3. n-13=16: add 13 to both sides. the answer is 29.

Write an inequality and solve each problem.for exercises 11 and 12, interpret the solution.

If the value of cos330°is√3/2 then find cos 165°.