Area of Polygons
the formula for the area of a rectangle?
Area of a rectangle = bh
The formula for the area of a circle
Area of a circle = (pi)r2
The formula for the circumference of a circle. (use pi)
C = (pi)d or
C = (pi)r2
The distance around a polygon.
Perimeter
A square has a side length of 6 inches. Which is the larger number, the perimeter or the area?
The area = 36 inches 2
The perimeter = 24 inches
The AREA is larger.
The approximate decimal value of pi?
3.14
The circumference of a circle with a diameter of 3 cm
What is 9.42 cm?
The perimeter of a rectangle with a length of 5 inches and a width of 2 inches
14 inches
Of Area and Perimeter, which has the larger number?
The Area of a square with a side length of 2 cm?
Or the Perimeter of a square with a side length of 2 cm?
The Perimeter
(Perimeter = 8 cm while Area = 4 cm2)
The side length of a square with an area of 16 square centimeters
What is 4 cm?
The area of a circle with a radius of 2 cm.
12.56 cm2
The circumference of a circle with a diameter of 4.5 in
14.13 in
The perimeter of a square with a side length of 10 inches
40 inches
The better deal - one 64" diameter pizza for $10.00 or two 8" diameter pizzas for $10.00?
(Which gives you the most pizza for your money?)
One 16" pizza for $10.00 has an area = 64(pi) in2
Two 8" pizzas have an area of 2(16)(pi) or 32(pi) in2
ONE 16" pizza is the better deal.
The formula for area of a triangle?
Area = (bh)/2
The area of a circle with a diameter of 6 cm
28.26 square cm
The circumference of a circle with a radius of 5 in
31.4 in
What does circumference mean?
The distance around a circle.
If the area of a circle is pi(100), what is the diameter of the circle?
(pi)100 = (pi)r2
r2 = 100
r = 10
d = 2(10) = 20
The area of a rectangle with a base of 7 inches and a height of 5 inches = ?
Area = 35 inches2
The Area of a circle is 12.56 ft 2. What is the radius?
The radius = 2 feet
The diameter of a circle with a circumference of 28.26 cm
What is 9 cm?
A square with a perimeter of 28 inches will have 4 sides of what length?
7 inches
If the area of a triangle is 24 yards and the base has a length of 6 yards, find the triangle's height.
h = 48 yards.