Exploring Area of Composite Figures

What is the formula for the area of a parallelogram?

• base + height

• base x height

• 1/2 base x height

• PI x radius squared

How do you calculate the radius if you know the diameter of a circle?

• Square the diameter

• Multiply the diameter by PI

• Divide the diameter by 2

• Multiply the diameter by 2

What is the correct formula to calculate the area of a semicircle?

• base x height

• 1/2 PI x radius squared

• 1/2 base x height

• PI x radius squared

What shapes make up the composite figure in the first example?

• A square and a circle

• A circle and a triangle

• A rectangle and a trapezoid

• A triangle and a semicircle

How do you find the missing height of a trapezoid if you know the total height and one segment?

• Multiply the two heights

• Subtract the segment from the total height

• Divide the total height by the segment

• Add the two heights

What is the area of a trapezoid formula?

• PI x radius squared

• 1/2 height x (base1 + base2)

• base x height

• 1/2 base x height

In the example involving a rectangle and a triangle, what is the base of the triangle?

• The same as the rectangle's height

• The same as the rectangle's base

• Half of the rectangle's base

• Twice the rectangle's height

When calculating the area of a shaded region that is a rectangle with triangles removed, what operation do you perform?

• Add the areas of the rectangle and triangles

• Divide the area of the rectangle by the triangles

• Subtract the area of the triangles from the rectangle

• Multiply the areas of the rectangle and triangles

For the swimming pool example, how do you find the area of the pool?

• Add the areas of the two rectangles

• Divide the larger rectangle by the smaller one

• Multiply the areas of the two rectangles

• Subtract the smaller rectangle from the larger one

In the picnic section example, what do you do after calculating the areas of the rectangle and triangle?

• Multiply the areas of the rectangle and triangle

• Subtract the triangle from the rectangle

• Divide the rectangle by the triangle

• Add the areas of the rectangle and triangle