Surface Area of Cylinders
Circumference
Diameter & Radius
Area of Circles
Composite Figures
100
The net of a cylinder is made from what three shapes?
Two circles and a rectangle.
100
What is the circumference of a circle with a diameter of 9 cm?
28.27 cm
100
Define diameter.
The diameter is the length of the line through the center that touches two points on the edge of the circle.
100
What is the area of a circle with a radius of 5 cm?
78.5 cm sq
100
Find the area of the composite figure.
140 ft2
200
What is the formula for Surface Area?
2(pi)(r)(h) + 2(pi)(r)sq
200
What is the circumference of a circle with a radius of 9 cm?
56.52 cm
200
What is the diameter of a circle with a radius of 15 cm?
30 cm
200
What is the area of a circle with a radius of 4.9 cm?
75.4cm sq
200
Find the area of the composite figure.
124 in2
300
Find the surface area of a cylinder that has a radius of 2 cm and a height of 5 cm.
88 cm sq
300
What is the circumference of a circle with a diameter of 12.6 m?
39.6 m
300
What is the radius of a circle with a circumference of 37 cm?
5.9 cm
300
What is the area of a circle with a diameter of 13 cm?
132.7 cm sq
300
There is a rectangle piece of land made up of grass. Bob decided to build a garden in a semicircle shaped garden bed. Find the perimeter of the grass lawn.
C = 37.68/2
= 18.84 m
Perimeter of Rectangle = 10 + 10 + 12
= 32 m
Total Perimeter = 18.84 m + 32 m
= 50.84 m
400
What is the surface area of a cylinder whose radius is 10 and height is 12cm sq?
1381.6 sq
400
What is the circumference if the radius is 4mm.
25.12mm
400
A machine makes circular paper plates that have a circumference of 50 cm. What is the diameter?
15.9 cm
400
What is the area of a circle with the radius of 11 cm?
379.94 cm sq
400
Find the area of the shaded region IN the rectangle above (ignore the dark grey)
A= bh
A=14x8
A= 112 mm2
A=1/2bh
A=.5 x 10 x 5
A=25 mm2
Shaded region = 112-25 = 87 mm2