2/5 SF Practice! (Early finishers)

Calculate the scale factor.

The scale factor is .

The triangles are similar. What is the perimeter of Triangle ABC?

The perimeter of Triangle ABC is units.

Rectangles m and n are similar. If Rectangle m has a length of 10 centimeters and a width of 9 centimeters, what is the length and width of rectangle n?

The length of rectangle n is centimeters and the width is centimeters.

Thomas has a scale drawing for his club house. The measurements are 6 inches (length) by 12 inches (width). What will the actual club house measurements be if the scale factor is

¾ in. = 2 feet?

The length is feet and the width is feet .

If he wanted to cover the floor of the club house with carpet, how much carpeting will he need?

Thomas would need square feet of carpeting to cover the floor.

Otto bought a 6 feet by 9 feet rectangular rug. He would like to buy a similar rug with double the dimensions. How many times larger than the original rug will the area of the new rug be?

The area of the new rug will be times larger.

Calculate the scale factor.

The scale factor is .

Mrs. Capps has plans for a rectangular garden that measures 8 ft. by 10 ft. Unfortunately, she does not have enough room in her backyard and needs to decrease the size of her garden. She only has room for a garden that has dimensions 0.75 times the size of the original dimensions. What is the area and perimeter of her new garden?

The perimeter is feet and the area is square feet.