Chapter 7 Review

Front

What is the ratio of the areas of two circles if the ratio of their diameters is 2:5?

Back

4:25

Front

How do you calculate the perimeter of a triangle?

Back

Add the lengths of all three sides.

Front

If the area of triangle A is 54 and triangle B is 150, what is the scale factor of A to B?

Back

3:5

Front

What is the scale of a drawing if a soccer field is 14 inches long in the drawing and the actual field is 98 yards long?

Back

1 inch = 7 yards

Front

What is the value of X if 2X + 3 = 17?

Back

7

Front

Define 'scale factor' in geometry.

Back

The ratio of the lengths of corresponding sides of two similar figures.

Front

What is the formula for the area of a triangle?

Back

Area = 1/2 * base * height.

Front

If two shapes are similar, how do their areas compare?

Back

The ratio of their areas is the square of the ratio of their corresponding sides.

Front

What is the perimeter of a rectangle with length 10 and width 5?

Back

30 (Perimeter = 2(length + width)).

Front

How do you find the area of a rectangle?

Back

Area = length * width.