One of the most important and exam oriented question from Chapter name- circles
Topic – Angle properties of circles
Chapter number- 15
It is given that two circles are 13 cm apart with their centres. Radii of them are 3 cm and 8 cm.
We have to calculate the length of a direct common tangent to them.
ICSE Avichal publication
Understanding ICSE Mathematics
Question 15
Solution:
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Let A and B be the centres of the circles
whose radii are 8 cm and 3 cm and
let TT’ length of their common tangent and AB = 13 cm.