Question Detail
Question
To construct a common direct tangent to two unequal circles with radii R and r (page 15), what radius is used to draw a circle from the center of the larger circle (O) to cut the semi-circle at point B?
Correct Answer
Option B is the correct answer.
Detailed Explanation
Page 15, step 4 states: 'Draw a circle centre O with radius R-r to cut semi-circle at B.'
Hint
Check step 4 of 'To Construct a Common Tangent to Two UNEqual Circles' instructions.