The circle below has center O, and its radius is 7m. Given that =m∠AOB30°, find the area of the shaded region and the length of the arc ADB.

3382-299=3383- ? fill in the blank?

Look at the figure below: triangle abc is a right triangle with angle abc equal to 90 degrees. the length of ac is 5 units and the length of ab is 4 units. d is a point above c. triangle adc is a right triangle with angle dac equal to 90 degrees and dc parallel to ab. what is the length, in units, of segment cd?

20 ! brainliest ! add and simplify your answer.