Perimeter and Area of Similar Shapes

Find the ratio (red to blue) of the perimeter.

The perimeter of the red triangle is 16. What is the perimeter of the blue triangle?

Two hexagons are similar with a scale factor of 4/5. If the area of the larger hexagon is 20, what is the area of the smaller hexagon?

Find the missing perimeter and area.

Gwen scans a photo that is 4 in. wide by 6 in. tall into her computer. If she scales the photo so that the area is only 6 square inches, what would the perimeter be?

Tags

CCSS.7.G.A.1

A figure is dilated by a scale factor of 4. Which of the following statements about the figure must be true?

• The perimeter and area are both multiplied by 4.

• The perimeter is multiplied by 4 and the area is multiplied by 16.

• The perimeter and area are both divided by 4.

• The perimeter is multiplied by 16 and the area is multiplied by 4.

Tags

CCSS.7.G.A.1

Mr. Tevin drew a scale model of a circular garden that had a radius of 2 inches. How much fencing would be required to wrap around a garden that is 100 times bigger? Give your answer in FEET

Tags

CCSS.7.G.A.1

Find the ratio (red to blue) of the perimeter.

Find the ratio (red to blue) of the area.

Find the ratio (red to blue) of the area.

Tags

CCSS.6.G.A.1