Find the measure of the missing angle to the nearest degree.
20

What is the circumference of a circle with an area of 50.24 cm²?

Renee hiked for 6 3/4 miles. after resting, renee hiked back along the same route for 5 1/4 miles. how many more miles does renee need to hike to return to the place where she started? represent your answer as a simplified mixed number, if necessary.

When a number is decreased by 9.9% the result is 40. what is the original number to the nearest tenth? super urgent