RRB Paramedical Staff Nurse Model Paper 8

Question : 44 of 100

Marks: +1, -0

The circumferences of two circles are touching externally. The distance between their centers is 12 cm. The radius of one circle is 7 cm. Find the diameter (in cm) of the other circle.

Validate

Solution:

Let the radius of other circle

=r

A B=12

and

A C=7

CB=12-7=5

( radius)
Now, Diameter

=2 ×

radius

=2 × 5=10{cm}

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