Shaded Area 1.notebook
March 20, 2017
Area of Shaded Regions
Day 1
1) Square ABCD is drawn
about circle O. The radius
of circle O is 5. The region
between the square and the
circle is shaded. Find:
A
B
●
5
O
D
a. the diameter of the circle
b. the length of the side of the square
C
Shaded Area 1.notebook
c. the area of the square
March 20, 2017
5
d. the area of the circle
e. the area of the shaded
region
10
A
●
B
5
O
D
C
f. the area of the shaded region to the
nearest tenth.
2) Rectangle ABCD is drawn in
circle O. AB = 6, BC = 8. The
diagonal of the rectangle,
, B
is also the diameter of the
circle. (Leave answers in A
terms of when possible.)
a. Find OC.
b. Find the area of circle O
●
C
O
D
Shaded Area 1.notebook
March 20, 2017
B
e.Find the area of
rectangle ABCD.
8
6
A
10
●
O
f. Find the area of
the shaded region.
A
D
B
o●
D
C
C
Rectangle ABCD
Circle O
AB = 8
OC = 2
a) Find the area, in terms of , of the shaded
region.
Shaded Area 1.notebook
March 20, 2017
Answer from a)
32 - 2
units2
b) Find the area of the shaded region to the
nearest tenth.
Trapezoid ABCD
Circle O
A
B
Circle P
P
O
AB = 12
●
●
DC = 20
Radius of each
C
D
circle is 4
Find the area, to the nearest tenth, of the
shaded portion.