The distance between the centres of two circles is 61 cm and their radii are 35 cm and 24 cm. What is the length (in cm) of the direct common tangent to the circles?
Show answer & explanation
Correct answer: A
Explanation
The correct answer is option 1 i.e. 60
Length of Direct common tangent
= √[(61)2 - (35 - 24)2]
= √[3721 - 121]
= √3600
= 60 cm