Area and Perimeter Changes in Dimension

What is the area of the attic floor?

• 390.5

• 781

• 1,477

What is the area of this composite figure?

• 135

• 186

• 110

What two dimensions are needed to find the area of this triangle?

• 12

• 5

• 6

• 14

What is the area of the parallelogram?

• 248.4

• 124.2

• 62.1

• 22.7

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

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

Find the Area.

• 14

• 20

• 24

• 40