Perimeter and Area Doubled Tripled Quadrupled

If a rectangle has an area of 48 cm², what would be the area of   a similar rectangle if the dimensions are doubled?

• 96 cm²

• 192 cm²

• 216 cm²

• 2304 cm²

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

A parallelogram with an area of 100 cm² is enlarged so that its height is tripled and its base is quadrupled. What is the area of the new parallelogram?

• 14400 cm²

• 1200 cm²

• 3600 cm²

• 300 cm²

If the height of a triangle is doubled and the base is tripled. How many times bigger is the area of the new triangle?

• 2

• 6

• 3

• 1

A rectangle has a base of 10 mm and a height of 6 mm, and we double the height, what is the new perimeter and area?

• Perimeter = 22 mm and Area = 120 mm

• Perimeter = 44 mm and Area = 120 mm

• Perimeter = 32 mm and Area = 240 mm

• Perimeter = 32 mm and Area = 240 mm

A triangle has a perimeter of 16 cm and an area of 12 cm^2. If the dimensions are doubled what is the new perimeter and area?

• P =32 cm and A = 24 cm²

• P = 32 cm and A = 48 cm²

• P = 24 cm and A = 24 cm²

• P = 24 cm and 48 cm²

A pentagon has an area of 25 ft², the sides are tripled what is the new area?

• A = 75 ft²

• 100 ft²

• 200 ft²

• 225 ft ²

When the dimensions of a figure are changed by a scale factor of 3, what happens to the perimeter?

• The perimeter will be multiplied by 3

• The perimeter will be 3 more than the preimage

• The perimeter will be multiplied by 9

• There is no way to know, we don't have the measurements

The measurements of a hexagon are changed by a scale factor of 4, what will happen to the area?

• The area will be multiplied by a factor of 4

• The area will be multiplied by a factor of 8

• The area will be multiplied by a factor of 16

• We cannot determine the new area

The distance around an object is called the 

• area

• perimeter

• volume

• circumference