Aman flies with a 100 foot string. th angle of elevation of the string is 52 how high off the ground is the kite

What is the exact area of a circle with a diameter of 50 centimeters? a.87.9 square centimeters b.379.9 square centimeters c.1962.5 square centimeters d.4923.5 square centimeters

How do you use the elimination method for this question? explain, because i really want to understand!

Two cyclists 84 miles apart start riding toward each other at the same. one cycles 2 times as fast as the other. if they meet 4 hours later, what is the speed (in mi/h) of the faster cyclist?