Rah-Rah-Rectangles
Nice Tri-angles
Can I Get a Formula?
Pizza Pi
Who-za-ma-what-see
100
What is the area of a rectangle with a length of 12 yards and a width of 3 yards?
Area=36 square yards
100
Area = 24 sq. units
100
What is the formula for the area of a rectangle?
A=lw OR A=bh
100
A giant perfectly circular Aqua-Pool has a diameter of 648 feet. What is the radius of the Aqua-Pool?
radius=324 feet
100
Find the area:
27 cm2
200
What is the perimeter of a rectangular fenced yard with a length of 45 feet and a width of 25 feet?
Perimeter=140 feet
200
If the height of a triangle is 4 units, and the area is 12 square units, how many units is the base of the triangle?
Base=6 units
200
What is the formula for the area of a triangle?
A=bh/2
200
What is the Circumference of a circle?
The Circumference is the distance around the outside of a circle (or the Perimeter in the language of circles)
200
Find the area. (NOT drawn to scale)
50 cm2
300
Make 2 possible rectangles with an area of 12 square meters. What are their dimensions?
Several different answers, but all have to be factors of 12
300
90 ft2
300
What is the formula for the area of a parallelogram?
A=base times height
300
Find the area.
Area=78.5 cm2
300
Find the area: 
93 ft2
400
One rectangle has a width of 8 feet and an area of 48 square feet. Another rectangle has a length of 2 feet and an area of 48 square feet. Which rectangle has the GREATEST perimeter? HINT: DRAW THE RECTANGLES ON PAPER
The second rectangle has a perimeter of 52 (the first has a perimeter of 28)
400
Why do we divide by 2 when we are finding area of a triangle?
Because a triangle is HALF of a parallelogram so the area is HALF the area of a parallelogram (base times height).
400
What is the formula for the circumference of a circle?
A=pi times diameter
400
How many more square inches are there in a 16 inch pizza than in a 10 inch pizza?
There are 122.46 more square inches of pizza.
400
Find the area:
Area of triangle= 3 x 6 ÷ 2= 9cm2
Area of rectangle = 5 x 6 = 30 cm2
Together: 30 + 9 = 39cm2
500
The area of a rectangle is 64 cm2. One of the sides is 4 cm. What is the perimeter?
40 cm
500
True or false: The area of a triangle with Base=4m and Height=3m is 12 square meters.
False: You have to divide your answer by 2...so the area of the triangle is 6 square meters.
500
What is the formula for the area of a circle?
A= pi times radius times radius
500
Which has more square inches of pizza...a large square pizza with 15 inches on each side...OR a large 16-inch diameter round pizza?
The SQUARE pizza has 225 square inches and the CIRCLE pizza has 200.96 square inches.
500
Find the perimeter of this shape.
(Hint: Circumference = pi x diameter.... the dotted line goes right through the center of the circle)
Perimeter of the half circle: (25 x pi) ÷ 2
25 x 3.14 = 78.5 ÷ 2 = 39.25
Add the rest:
39.25 + 20 + 20 + 25 = 104.25 cm