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Greece Junior Math Olympiad
1991 Greece Junior Math Olympiad
2
2
Part of
1991 Greece Junior Math Olympiad
Problems
(1)
area of semicircle - Greece Juniors 1991 p2
Source:
9/13/2024
Given a semicircle of diameter
A
B
AB
A
B
and center
O
O
O
. Let
C
D
CD
C
D
be the chord of the semicircle tangent to two circles of diameters
A
O
AO
A
O
and
O
B
OB
OB
. If
C
D
=
120
CD=120
C
D
=
120
cm,, caclulate area of the semicircle.
geometry
semicircle