What is the area and perimeter of the following figure?
Area = 6(4.5)
A = 24 square units
Perimeter = 6 + 6 + 4.5 + 4.5
P = 21 units
(units are not required)
This is a net of a _______________.
triangular pyramid
What is the surface area of this prism?
90 square units
The number of square units that fit into a 2D shape and the amount of space in a 2D figure? (What is the math vocabulary term for this?)
AREA
What is the area and perimeter of the parallelogram shown below?
A = bh P = 17 + 6 + 17+ 6
A = 17 x 4 P = 23 + 23
A = 68 cm2 P = 46 cm
What is the name of this shape?
Triangular prism
What is the surface area of the prism?
SA = 142 in2
Top: 3 x 5 = 15
Bottom: 3 x 5 = 15
Front: 5 x 7 = 35
Back: 5 x 7 = 35
Left: 3 x 7 = 21
Right: 3 x 7 = 21
The distance around a figure. (What is the math vocabulary term for this?)
Perimeter
Mario wants to paint the front triangular portion of his roof white. In order to buy enough paint, he needs to know the area of that part. What is the area?
For a triangle,A = ½bh
On Mario’s roof, A = ½ x 25 x 17
A = 212.5 feet2
What shape is this figure?
Rectangular prism
Lauren is building a box to hold her art supplies. She wants the box to be 8 inches long, 6 inches wide, and 9 inches high. She does not want a top for this box. How much wood will she use to create this box?
Wood needed: 300 in2
Bottom: 8 x 6 = 48
Front: 8 x 9 = 72
Back: 8 x 9 = 72
Left: 6 x 9 = 54
Right: 6 x 9 = 54
The number of unit squares needed to cover a 3D figure is called...
SURFACE AREA
Nora has a table that is shaped like the trapezoid shown. What is the area of the tabletop?
Triangle 1 A = ½bh Rectangle A = 12 (24). A = ½ (6)(12) A = 12 (24) A=3 (12) A = 288 in2 A = 36 in2
Total Area: Triangle 1 + Triangle 2 + Rectangle 36 + 36 + 288 360 in2
Which of the following nets will create a cube? Select all.
A and D
What is the surface area of the triangular prism shown?
Surface Area = 294 cm2
Triangle: ½(4 x 6) = 12
Back Triangle: ½(4 x 6) = 12
Left Rectangle: 15 x 7 = 105
Right Rectangle: 15 x 7 = 105
Bottom Rectangle: 15 x 4 = 60
What is the formula for the area of a triangle?
A = ½bh
OR
A = bh divided by 2
Katrina wants to carpet her living room. Using the diagram of her living room, find the area that must be carpeted.
The total area is 272 ft2.
What 3D figure has a net with a square base and four triangular sides?
Square pyramid
Find the surface area of the net of the square pyramid.
SA = 132 in2
triangles = 1/2(6 x 8) = 24
24 x 4 = 96
square = 6 x 6 = 36
96 + 36 = 132
What is the difference between a rectangular pyramid and a triangular prism?
A rectangular pyramid has a rectangular base and four triangular sides that meet at one vertex
A triangular prism has two triangular bases connected by 3 rectangular sides.