SPC: Question 5
Check boxes for the following:
1. Hint for (a): Through different stages
Blue dots for :
1. Rotation of points or translation of circle.
Question:
The diagram shows a circle of centre o, with radius r metres. A and D are points on the circle such that AD = 16 cm.
E is the midpoint of AD and E is on OF such that EF = x metres.
(a) Show that
(b) Express r in terms of x.
(c) Hence, given then EF = 4 cm, calculate the radius of of the sphere.