Show:
Parallel & Perpendicular Line Segments & Bisectors
Area of a Parallelogram & Triangle
Circumference & Area of a Circle
Interpreting Circle Graphs
Let's See Whatcha Got!
100
What is the formula for the area of a parallelogram?
A = b x h
100
Go to page 105 in your textbooks and answer question 5 a and b. First group to answer the question correctly wins!
A) 20 cm(2) B) 21 cm(2) Question is only right if the squared (2) is there.
100
The area of a circle is about how many times the square of its radius?
3
100
What is another name for a pie chart?
A circle graph
100
A triangle has a base of 14.8 m and a height of 9.6 m. What is the area of the triangle?
71.04 m2
200
On a piece of paper, draw a 7cm line segment labeled G and H. Then... a) Draw two line segments that are parallel to GH b) On a separate piece of paper, draw GH again then draw two line segments that are perpendicular to GH.
a) G ----<------H A-----<------B C-----<------D E A I I I I b) G-------------H I I I I F B
200
Find the area of a parallelogram with a base of 5 cm, a height of 7 cm, and a side length of 8 cm.
35 cm2
200
If a circle has a diameter of 52 m, what is its approximate circumference?
163.28 m
200
A sector of a circle graph has a central angle of 270°. Determine the percent of the graph this sector covers.
75%
200
Tia and her father are building a treehouse in the shape of a triangle. How much wood will Tia need for the floor of her treehouse? if the height is 4.3m and the base is 5m. Draw a diagram to show all necessary work.
Area of a Triangle = b x h ÷ 2 A = 5 x 4.3 ÷ 2 A = 10.75 Tia will need 10.75 m2 of wood for the floor.
300
Go to page 92 in your textbook and answer question 4 a and b. First group to finish wins!
Because this is a drawing - please look at answer in back of textbook. Page 92.
300
What is the area of a triangle with a base of 9 cm and a height of 7 cm?
31.5 cm(2)
300
What is the radius of a circle with a circumference measuring approximately 27.004 cm?
4.3 cm
300
One sector of a circle graph covers 55% of the graph. What is the central angle of this sector?
198°
300
Afsha has enough paint to cover an area of 7.5 m2. She plans to paint a design on her bedroom wall in the shape of a parallelogram. If the design has a height of 2.5 m, what is the maximum possible size of the base?
Area of a parallelogram = b x h 7.5 = b x 2.5 7.5 = 3 x 2.5 Therefore, the maximum size for the base is 3 m.
400
Name and sketch at least two objects in the real world that include: a) Parallel Lines b) Perpendicular Lines c) Both Parallel and Perpendicular Lines together
Answers may vary.
400
A triangle has a base of 5.7 m and a height of 312 cm. What is the area of the triangle in m2? Remember: 100 cm = 1 m
8.89 m2
400
The radius of a crop circle measures 19 m. What is its approximate circumference, rounded to the nearest metre?
119 m
400
Write the decimal equivalent for the following results. Then create a circle graph to illustrate the following test results from a class of 30 students. Mark Percent of Students A 20% B 40% C 30% D 10%
A .2 B .4 C .3 D.1 Show circle graph to teacher.
400
Jeremy is designing a flag with the height of 3m and the base of 2.4m. What is the area of Jeremy’s flag?
Area of triangle = b x h ÷ 2 A = 2.4 x 3 ÷ 2 A = 3.6 The flag has an area of 3.6 m2.
500
Turn to page 93 in your textbook and answer question 7. First group to answer wins!
A----------C----------B I I I I I Should be 15.5cm from A to C and from C to B. With hash marks and 90 degree angle.
500
What is the area of a parallelogram with a base of 1.4 m and a height of 2.4 m?
3.36 m(2)
500
A round pool has a circumference of 40.82 m. What is the approximate area, rounded to the nearest square metre?
133 m2
500
Hamid wants to build a straight interlocking brick pathway 0.5 m wide running across his circular garden, passing through its centre. The approximate area of the garden measures 50.24 m2. Interlocking bricks cost $13.00/m2. How much will it cost Hamid to buy brick for the pathway?
A = r2 50.24 = r2 50.24 ÷ 3.14 = 3.14 ÷ 3.14 r2 16 = r2 4 ´ 4 = 16. Therefore, the radius is 4 m. r = 4 m d = 8 m Area of Pathway = l w A = 8 0.5 A = 4 Cost of brick = 4 $13.00 = $52.00 The brick will cost $52.
500
The new gym floor will include a design in the shape of a parallelogram. There are enough special tiles to cover an area of 30 m2. If the base is 5 m, what can the height of the design be?
Area of parallelogram = b x h 30 = 5 x h 30 = 5 x 6 Therefore, the design can have a height of 6 m.