Homework Review Flashcardizz 10/28-11/1

Front

What is surface area?

Back

Surface area is the total area that the surface of a three-dimensional object occupies. It is measured in square units.

Front

How do you calculate the surface area of a rectangular prism?

Back

To calculate the surface area of a rectangular prism, use the formula: SA = 2(lw + lh + wh), where l is length, w is width, and h is height.

Front

What is a scale drawing?

Back

A scale drawing is a representation of an object that is proportional to its actual size, using a specific ratio.

Front

If a scale is 2 cm : 3 ft, how do you find the actual height of an object?

Back

To find the actual height, set up a proportion using the scale. For example, if the height in the drawing is x cm, then (2 cm / 3 ft) = (x cm / actual height in feet).

Front

What is the formula for the area of a rectangle?

Back

The area of a rectangle is calculated using the formula: Area = length × width.

Front

What is a composite figure?

Back

A composite figure is a shape that is made up of two or more simple shapes, such as rectangles, triangles, and circles.

Front

How do you find the area of a composite figure?

Back

To find the area of a composite figure, calculate the area of each simple shape and then sum them up.

Front

What is the formula for the area of a circle?

Back

The area of a circle is calculated using the formula: Area = πr², where r is the radius.

Front

How do you calculate the circumference of a circle?

Back

The circumference of a circle is calculated using the formula: Circumference = 2πr, where r is the radius.

Front

What is the relationship between the radius and the diameter of a circle?

Back

The diameter of a circle is twice the length of the radius. Diameter = 2 × radius.