H = (
a,
)
R
adius of circle
O
=
R
adius of circle
D
=
R
adius of circle
E
=
A
rea of circle
O
=
=
=
A
rea of big semi circle
=
A
rea of semi circle
D
=
A
rea of semi circle
E
=
A
rea of the
Arbelo
=
=
=
=
=
Return
H = (a,
)
Radius of circle O
= 
Radius of circle D
= 
Radius of circle E
= 
Area of circle O
= 
=
= 
Area of big semi circle = 
Area of semi circle D
= 
Area of semi circle E
= 
Area of the Arbelo
= 
= 
= 
= 
= 