Perimeter and Area Dimension Changes

The distance around an object is called the 

• area
• perimeter
• volume
• circumference

The space inside an object is called it's

• area
• perimeter
• volume
• circumference

Suppose the dimensions of a triangle with a perimeter of 18 units are doubled. Find the perimeter of the new triangle.

• 18
• 36
• 72
• 288

What would the new perimeter be if each side length was multiplied by 3?

• 7 inches

• 21 inches

• 63 inches

• 179 inches

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

• 96 cm²

• 192 cm²

• 216 cm²

• 2304 cm²

Describe the effect of change on the area of the rectangle if the base and height are both multiplied by 1/2.

• The area is multiplied by 1/2
• The area is multiplied by 1/4
• The area is multiplied by 2
• The area is green

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

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 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

What happens to the perimeter of a square if the sides are    halved?

• doubles
• halved
• quadrupled
• forthed