Exploring Surface Areas and Volumes of Similar Solids

This video tutorial covers the concept of similar solids, explaining how their corresponding dimensions are proportional. It discusses the scale factor and how it relates to the ratios of lengths, areas, and volumes. The tutorial provides examples of calculating scale factors and using them to find unknown measurements. It also explains how to use cube roots and square roots to determine these ratios, offering practical problem-solving techniques.

What defines similar solids?

• Solids made of the same material

• Solids with the same color

• Solids with the same volume

• Solids with proportional corresponding dimensions

If two solids are similar, what can be said about their corresponding dimensions?

• They are inversely proportional

• They are identical

• They are proportional

• They are unrelated

What is the scale factor between two similar cylinders with dimensions 6 and 5, and 12 and 10 respectively?

• 12/10

• 6/5 or 5/6

• 1/2

• 2/1

Tags

CCSS.7.G.A.1

Are two rectangular prisms with dimensions doubled similar?

• No, because they have different shapes

• Yes, but only if they have the same volume

• No, because they are different sizes

• Yes, because dimensions are doubled

Tags

CCSS.HSG.SRT.A.2

CCSS.8.G.A.4

What is the ratio of areas if the scale factor of lengths is 1/2?

• 4/1

• 2/1

• 1/4

• 1/2

Tags

CCSS.7.G.A.1

How do you find the scale factor of lengths from the ratio of volumes?

• Halve the ratio

• Double the ratio

• Cube root the ratio

• Square root the ratio

What does the cube root function help to find in the context of similar solids?

• The total surface area

• The scale factor of lengths

• The ratio of areas

• The ratio of volumes

Tags

CCSS.6.G.A.2

CCSS.5.MD.C.5B

What is the scale factor of two similar prisms with surface areas of 144 and 324?

• 3/2

• 9/4

• 4/9

• 2/3

Tags

CCSS.7.G.B.6

If the volume ratio of two similar solids is 64/125, what is the ratio of their areas?

• 64/125

• 4/5

• 16/25

• 8/125

What is the surface area of the smaller solid if the larger one has a surface area of 250 and the volume ratio is 128/250?

• 320 meters squared

• 250 meters squared

• 125 meters squared

• 160 meters squared

Tags

CCSS.7.G.B.6