To find the height of cylinder Y.

Answer to Problem 27HP
Laura
Explanation of Solution
Given:
Two similar cylinders X and Y
Diameter of cylinder X =20 cm
Height of cylinder X =11 cm
Radius of cylinder Y =30 cm
Concept used:
Two cylinders are similar if their corresponding radii and heights are proportional.
Calculation:
Since cylinder X and cylinder Y are similar, compare their corresponding radii and heights.
Let the height of cylinder Y is a , then
radius Xradius Y=height Xheight Y
⇒1030=11a
⇒10⋅a=11⋅30⇒10a=330⇒a=33
Paloma incorrectly compared the diameter of X to the radius of Y.
Conclusion:
Therefore, Laura found the height of cylinder Y correctly.
Chapter 12 Solutions
Glencoe Geometry
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