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Objectives:Identify & apply formulas for the circumference
& area of a circle. 5.3 Circumferences & Areas of
CirclesHSPA Problem of the Day:Which figure below does not have an
area of 100?
A. A rectangle with length 2 & height 50.B. A triangle with
base 100 & height 2.C. A trapezoid with one base 15, other base
25 & height 5.D. A square with one side 25.
Warm-Up:
The set of all points in a plane that are the equidistant from a
given point known as the center of the circle.Circle: The point
inside a circle that is equidistant from all points on the
circle.Center of a Circle:Radius:Diameter:A segment that connects
the center of a circle with a point on the circle [one-half the
diameter of the circle]A chord that passes through the center of a
circle; twice the length of the radius of the circle.
The distance around a circle.Circumference:Area of a Circle:
Find the radius of the circle; leave answers in terms of
1. C = 2
2. C = 24
3. A = 20
4. A = 628
Find the area of the shaded region.
Find the area of the green shaded region.
Find the area of the shaded region.
Find the area of the shaded region.EXIT TICKETHomework:Practice
worksheet; skip 7 & 11Objectives: Develop strategies to find
the perimeter & area to unique polygons.Area & Perimeter of
PolygonsWarm-Up - Collins Writing Type 1:Describe how you would
find the perimeter of the given
figure._______________________________________________________________________________________________________________________________________________________________________________10101010Find
the perimeter & area of the figure.HSPA Problems of the
Day:Figure-B: One side of the square is 12 centimeters. What is the
area of the shaded region?
144 square units B. 31 square units
C. 113 square units D. 75 square units
Figure-A: Diameter of large circle = 14, diameter of small
circle = 10. What is the approximate area of the shaded region?
232 square units B.154 square units
C. 75 square units D. 6 square units
HSPA Problems of the Day:
Find the perimeter & area of the shaded region.Find the
perimeter & area of the figure.15127Find the perimeter &
area of the figure.61524832Find the area of the figure.26Find the
area of the shaded sector.12inFind the area of the shaded
sector.19mFind the area of the shaded sector.14cmHomework:Practice
worksheetObjectives: Use formulas for are to identify the missing
length of a given polygon.Area & Perimeter of
PolygonsWarm-Up:Without lifting your pencil, can you connect all of
the dots with four straight lines?The height of a parallelogram is
8 feet more that its base. If the area of the parallelogram is 48
square feet find its base and height.The height of a parallelogram
is four times its base. If the area of the parallelogram is 256
square centimeters. Find its base and height.The base of a triangle
is 6 times its height. The area of the triangle is 147 square
inches. Find the base and the height of the triangle.The height of
a triangle is twice its base. If the area of the triangle is 196
square millimeters, find the base and height.A trapezoid has base
lengths of 9 feet and 16 feet, with an area of 225 square feet.
What is the height of the trapezoid?A trapezoid has a height of 6
meters, a base of 24 meters, and an area of 168 square meters. What
is the length of the other base?Homework:Practice worksheet
Find the probability of a dart landing in each area: (LEAVE
ANSWERS IN EXACT FORM)
P(red):
P(blue):
P(yellow):
P(brown):