Surface Area Volume and Changing Dimensions

Two spheres have a scale factor ratio of 1:3.  The smaller sphere has a surface area of 16 ft²_.  Find the surface area of the larger sphere.

• 48 ft²

• 144 ft²

• 432 ft²

• 32 ft²

When a cube is tripled in size, then the volume is _______.

• 81 times larger

• 27 times larger

• 9 times larger

• 3 times larger

When you triple the height, the volume _____

• Stays  the same

• Doubles

• Triples

• Quadruples

Are the two figures similar?
(If yes, what is the similarity ratio?)

• Yes; 3

• Yes; 3/10

• Yes; 3/5

• No

Are the two figures similar?
(If yes, what is the similarity ratio?)

• Yes; 5

• Yes; 9:6

• Yes; 1/3

• No

Find the volume of a square pyramid with the side length 3cm and height of 5cm.

• 60cm³

• 75cm³

• 45cm³

• 15cm³

^{_{Find the Surface Area}}

• 15m²

• 16m²

• 18m²

• 20m²

What is surface area?

• 1339.73

• 703.36

• 320.78

• 742.42

• 42.4 in³
• 169.6 in³
• 56.5 in³
• 14.13 in³

Find the surface area of this figure.

• 148 cm²

• 120 cm²