Circle Basics
What is the distance from the center of a circle to the edge called?
Radius
Find the circumference of a circle with diameter 8 in.
≈ 25.12 in
Area of a rectangle with l = 7, w = 4
28 units²
Volume of a box: l = 5, w = 3, h = 2.
30 units³
Find the surface area of a cube with side length 3.
54 units²
True or False: The diameter is half the radius.
False
Find the area of a circle with radius 3 ft.
≈ 28.26 ft²
Area of a triangle with b = 10, h = 6.
30 units²
Volume of a pyramid: base area = 36, height = 4
48 units³
What’s the difference between lateral area and surface area?
Lateral = sides only; surface = all faces
If the diameter is 10 cm, what is the radius?
5 cm
If a circle’s area is 78.5 in², what is the radius?
5 in
Area of a trapezoid: b₁ = 5, b₂ = 9, h = 4.
28 units²
Volume of a cube with side length 6.
216 units³
A prism has length 10, width 4, height 3. Find total surface area.
196 units²
What is pi approximately equal to?
3.14 or 22/7
A circle has a radius of 10 cm. Find both circumference and area.
C ≈ 62.8 cm, A ≈ 314 cm²
True or False: Area is measured in cubic units.
False
A prism has base area 12 and height 5. What is its volume?
60 units³
Rectangular Prism
Length = 5 cm, Width = 3 cm, Height = 2 cm
62 cm²
Name and define three parts of a circle.
Radius, diameter, circumference.
How much greater is the area of a circle with radius 8 than one with radius 4?
≈ 150.72 units² difference
A triangle and a trapezoid both have area 40. List one possible set of base/height values for each.
Triangle: base = 10, height = 8
Trapezoid: base₁ = 10, base₂ = 10, height = 4
Volume of a pyramid: base area = 36 units², height = 4 units
48 units³
Cube
Side length = 6 in
216 in²