Scale Factors w/ Perimeter, Area

Front

What happens to the area of a circle if its radius is quadrupled?

Back

The new area will be 16 times the old area.

Tags

CCSS.7.G.B.4

Front

If a square garden has a side length of 25 feet, what is the area of a scale drawing using the scale 2 inches = 5 feet?

Back

100 in²

Tags

CCSS.7.G.A.1

Front

What is the area of a rectangle that is scaled by a factor of 7 if its original dimensions are 2 inches by 3 inches?

Back

42 sq in

Tags

CCSS.7.G.A.1

Front

If both dimensions of a rectangle are doubled, what happens to its perimeter?

Back

The new perimeter will be double the old perimeter.

Front

What is the scale factor if the perimeter of a rectangle changes from 20 inches to 80 inches?

Back

4

Tags

CCSS.7.G.A.1

Front

Define scale factor in relation to geometry.

Back

A scale factor is a number that scales, or multiplies, a quantity. It is used to enlarge or reduce figures.

Tags

CCSS.7.G.A.1

Front

How do you calculate the area of a rectangle?

Back

Area = length × width.

Tags

CCSS.3.MD.C.7B

CCSS.4.MD.A.3

Front

What is the relationship between scale factor and area for similar figures?

Back

The area of similar figures is proportional to the square of the scale factor.

Tags

CCSS.7.G.A.1

Front

If a triangle's base and height are both doubled, how does its area change?

Back

The area will be quadrupled.

Tags

CCSS.6.G.A.1

Front

What is the formula for the area of a circle?

Back

Area = π × radius².

Tags

CCSS.7.G.B.4