SSC CGL Tier II 21 Sep 2014 Paper

Question : 16 of 100

Marks: +1, -0

A is the centre of circle whose radius is 8 and B is the centre of a circle whose diameter is 8. If these two circles touch externally, then the area of the circle with diameter AB is

36 π
64 π
144 π
256 π

Validate

Solution:

(1)

Diameter = AB = 8 + 4 = 12 units
Radius =

12/2=6 \units

∴

Area of circle

=\π r^{2}=\π×6^{2}

=36 \π {\sq}

. units

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