Common Core: 3rd Grade Math : Geometric Measurement: Recognizing Perimeter

Study concepts, example questions & explanations for Common Core: 3rd Grade Math

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Example Questions

Example Question #141 : Geometry

What is the perimeter of the regular hexagon below? 

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Possible Answers:

\(\displaystyle 26cm\)

\(\displaystyle 22cm\)

\(\displaystyle 25cm\)

\(\displaystyle 24cm\)

\(\displaystyle 23cm\)

Correct answer:

\(\displaystyle 24cm\)

Explanation:

A regular hexagon has six equal sides. To find the perimeter of a hexagon, we can multiply the known side length by \(\displaystyle 6\) (since there are six sides) or we can add the known side length to itself six times. 

\(\displaystyle 4\times6=24\)

\(\displaystyle 4+4+4+4+4+4=24\)

Example Question #341 : Problem Solving

What is the perimeter of the regular hexagon below? 

Screen shot 2015 11 09 at 11.50.43 am

 

Possible Answers:

\(\displaystyle 22cm\)

\(\displaystyle 18cm\)

\(\displaystyle 20cm\)

\(\displaystyle 21cm\)

\(\displaystyle 19cm\)

Correct answer:

\(\displaystyle 18cm\)

Explanation:

A regular hexagon has six equal sides. To find the perimeter of a hexagon, we can multiply the known side length by \(\displaystyle 6\) (since there are six sides) or we can add the known side length to itself six times. 

\(\displaystyle 3\times6=18\)

\(\displaystyle 3+3+3+3+3+3=18\)

Example Question #1951 : Common Core Math: Grade 3

What is the perimeter of the regular hexagon below? 

Screen shot 2015 11 09 at 11.48.59 am

 

Possible Answers:

\(\displaystyle 12cm\)

\(\displaystyle 11cm\)

\(\displaystyle 10cm\)

\(\displaystyle 9cm\)

\(\displaystyle 8cm\)

Correct answer:

\(\displaystyle 12cm\)

Explanation:

A regular hexagon has six equal sides. To find the perimeter of a hexagon, we can multiply the known side length by \(\displaystyle 6\) (since there are six sides) or we can add the known side length to itself six times. 

\(\displaystyle 2\times6=12\)

\(\displaystyle 2+2+2+2+2+2=12\)

Example Question #98 : How To Find The Perimeter Of A Figure

What is the perimeter of the regular hexagon below? 

Screen shot 2015 11 09 at 12.24.12 pm

 

Possible Answers:

\(\displaystyle 50cm\)

\(\displaystyle 54cm\)

\(\displaystyle 52cm\)

\(\displaystyle 53cm\)

\(\displaystyle 51cm\)

Correct answer:

\(\displaystyle 54cm\)

Explanation:

A regular hexagon has six equal sides. To find the perimeter of a hexagon, we can multiply the known side length by \(\displaystyle 6\) (since there are six sides) or we can add the known side length to itself six times. 

\(\displaystyle 9\times6=54\)

\(\displaystyle 9+9+9+9+9+9=54\)

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