What is a composite figure?
A figure made from two or more geometric figures (or shapes)
The formula for the area of a rectangle
What is: A = lw
A figure composed of two rectangles. Rectangle one has a length of 6 in and a width of 4 in. Rectangle two has a length of 5 in and a width of 12 in. Find the area.
What is 74 square inches
Find the area AND perimeter of this composite shape:
Area = 6 cm2
What is the formula for the volume of a right rectangular prism?
length x width x height
What shapes would you divide this composite shape into?
What is one rectangle and one triangle.
The formula for the area of a triange
What is:
A=1/2 bh OR A= (bh)/2
A figure is composed of a square and a triangle. The length of each side of the square is 4cm. The base of the triangle is 4cm and the height is 7cm. Find the area.
30 square cm
Area of a triangle with a base of 16mm and a height of 9mm?
72mm2
What is the volume formula for a right triangular prism?
1/2(base x height x length)
How do you find the area of a composite figure?
You find the area of each figure (or shape) and add them together.
The formula to find the area of a parallelogram
Marcus has room that needs paint. Each of the four walls has a length of 6 feet and a height of 9 feet. If he has enough paint to cover 220 square feet, will he have enough paint?
Ye, he will have enough!
9x6=54 ft2 is the area for each wall
54 x 4 = 216 ft2 total
Find the area AND perimeter of this shape:
Area: 78 cm2
Perimeter: 44 cmTrue or False? A composite figure must have an even number of sides?
false
The way in which we find the area of a trapezoid
What is - decompose it into other shapes and find the area of each, then add them together
Richard has a rectangular garden bed with dimensions of 4 feet by 5 1/2 feet. He wants to divide it into 2 triangular garden beds for tomatoes and marigolds. What is the area of each triangular bed?
4x5.5 = 22ft2
22 / 2 = 11 ft2
Find the area of this regular trapezoid:
48in2
True or False? A composite figure can have a maximum of 3 shapes.
false
The two formulas you would need to calculate the area of a rectangle and a triangle
A = lw and (bh)/2
A figure is composed of a rectangle and a triangle. The length of the rectangle and base of the triangle are both 12m. The width of the rectangle is 8m, and the height of the triangle is 4m. What is the total area?
120 square meters
Find the area and perimeter of this shape.
Area = 140 cm2
Perimeter = 55cm