Surface Area Dimension Change

The length of one side of an equilateral triangle PQR is 8 inches. If triangle PQR is enlarged so that each side measures 20 inches, what is the effect on its area?

• The area is multiplied by 2.5

• The area is multiplied by 6.25

• The area is multiplied by 5

• The area is multiplied by 12.5

Find the surface area.

• A

• B

• C

• D

Find the surface area.

• A

• B

• C

• D

Find the surface area.

• A

• B

• C

• D

If the radius of a sphere is doubled, how does the surface area change?

• It doubles.

• It quadruples.

• It increases by 8 times.

• It increases by 4 times.

• A
• B
• C
• D

If Jesse wants to wrap a present that looks like the picture. How much paper would she use, not counting the overlap?

• 4050 in²

• 327 in²

• 242.5 in²

• 313.5 in²

How much gift wrap is needed to cover this box? ___________ square inches of paper

If you wanted to know how much metal is need to make a can you would be finding the ______

• Surface Area

• Volume

Jesse needs to wrap the present shown below. How much wrapping paper would he need?
How much wrapping paper is needed?

• 300 in²

• 558 in²

• 327 in²

• 354 in²