Area and Perimeter Similar

• 23.8 mm

• 10.2 mm

• 6.67 mm

• 16 yards

• 6 yards

• 8 yards

• 2 yards

• 36 yards

• 42 yards

• 30 yards

• 28 yards

• 19:25

• 25:19

• 361:625

• 625:361

• 8:5

• 5:8

• 64:25

• 25:64

• 4:49

• 2:7

• 1:7

• 1:25

If the linear scale factor of similar figures is r, how many times bigger is the area?

• r

• r²

• r³

• 2r

Rectangle A (enlarged figure) has an area of 180 square cm and Rectangle B (original image) has an area of 20 square cm. The two rectangles are similar. What is the linear scale factor?

• 9

• 3

• 2

• 1

If a rectangle is drawn and another rectangle is drawn so that the sides are twice as big as the first rectangle, what happens to the area?

• doubles

• triples

• quadruples

• not enough information

Find the area of polygon B given similar polygons and the scale factor is shown. Round your answer to the nearest tenth.

• 23.0 m²

• 18 m²

• 18.4 m²

• 12.5 m²