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SSC CHSL 5-March-2018 Shift 1 Paper
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© examsnet.com
Question : 5
Total: 100
The circumferences of two circles are touching externally. The distance between their centres is 12 cm.
The radius of one circle is 7 cm. Find the diameter (in cm) of the other circle.
12
10
8
5
Validate
Solution:
Let
x
=
7
be the radius of first circle and be the radius of second circle.
⇒
x
+
y
=
12
⇒
7
+
y
=
12
⇒
y
=
12
−
7
=
5
∴ Diameter of second circle =
2
×
5
=
10
cm
© examsnet.com
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