Hi can someone help me with these grade 12 function question. Please and thank you!
A parabolic arch is used to support a bridge. The arch is 80m wide at the base and the height of the vertex is 20m. How high is the arch at a point 20m in from either end of the base??? lol and answer is 15m
A parabolic dish for picking up sound has a diameter of 1.5 m and is 20cm deep. How high above the center of the dish should the microphone be placed to pick up the sound that is reflected to the focus. Answer is 70.315cm
srry for making it long