Question Detail
Question
For constructing a common tangent to two unequal circles, how is the radius for the circle drawn from centre O calculated?
Correct Answer
Option B is the correct answer.
Detailed Explanation
Page 15, step 4 says: 'Draw a circle centre O with radius R-r to cut semi-circle at B.'
Hint
Look at step 4 for 'To Construct a Common Tangent to Two UNEqual Circles' on page 15, specifically the radius for the circle drawn from center O.