Perimeter Calculations

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Questions and Answers

A rectangle has sides of 7 yards and 5 yards. What is the perimeter of the rectangle?

  • 10 yards
  • 35 yards
  • 12 yards
  • 24 yards (correct)

A square has a perimeter of 60 centimeters. What is the length of each side?

  • 15 centimeters (correct)
  • 12 centimeters
  • 240 centimeters
  • 30 centimeters

Triangle B has a perimeter of 50 feet. Two of its sides measure 15 feet and 20 feet. What is the length of the remaining side?

  • 10 feet
  • 15 feet (correct)
  • 35 feet
  • 25 feet

Rectangle E has a perimeter of 100 meters. Its length is 30 meters. What is its width?

<p>20 meters (C)</p> Signup and view all the answers

An equilateral triangle has sides that are each 9 centimeters long. What is the perimeter of this triangle?

<p>27 centimeters (B)</p> Signup and view all the answers

A square has sides of 25 meters, what is the perimeter of this shape?

<p>100 meters (D)</p> Signup and view all the answers

A hexagon has sides of 30 meters, what is the perimeter of this shape?

<p>180 meters (C)</p> Signup and view all the answers

A rectangle has sides of 20 meters and 30 meters, what is the perimeter of this shape?

<p>100 meters (C)</p> Signup and view all the answers

An isosceles triangle has two sides of 15 cm and a base of 10 cm. What is the perimeter?

<p>40 cm (C)</p> Signup and view all the answers

If a regular pentagon has a side length of 11 meters. What is the perimeter?

<p>55 meters (D)</p> Signup and view all the answers

A shape has a perimeter of 144cm, if the shape is a square, how long is each side?

<p>36cm (B)</p> Signup and view all the answers

A shape has a perimeter of 120cm, if the shape is a regular pentagon, how long is each side?

<p>24cm (A)</p> Signup and view all the answers

What is the key difference in calculating the perimeter of a regular polygon versus an irregular polygon?

<p>Regular polygons require multiplication of a fixed side length. (D)</p> Signup and view all the answers

What is the perimeter of a rectangle with sides measuring 9 cm and 16 cm?

<p>50 cm (C)</p> Signup and view all the answers

If a square's perimeter is equal in numerical value to the number of square centimeters of its area, what is the length of one side?

<p>4 cm (D)</p> Signup and view all the answers

A yard is rectangular in shape, with a length of 40 feet and a width of 26 feet. If fencing costs $12 per foot, how much would it cost to enclose the yard?

<p>$1584 (D)</p> Signup and view all the answers

Which of the following shapes would require you to add the lengths of all sides to calculate the perimeter?

<p>Scalene Triangle (D)</p> Signup and view all the answers

A regular dodecagon (12-sided polygon) has sides of 5 meters. What is the perimeter?

<p>60 meters (B)</p> Signup and view all the answers

Flashcards

What is perimeter?

The total distance around the outside of a two-dimensional shape.

How to calculate the perimeter of the rectangle in Quiz 1, question 1?

Add the lengths of all sides: 4 yards + 3 yards + 4 yards + 3 yards = 14 yards.

How to calculate the perimeter of the square in Quiz 1, question 2?

A square has 4 equal sides. So, 4 * 10 cm = 40 cm.

How to calculate the missing side of the triangle in Quiz 1, question 3?

Subtract the known sides from the perimeter: 44 feet - 10 feet - 16 feet = 18 feet.

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How to calculate the missing sides of Rectangle D in Quiz 1, question 4?

In a rectangle, opposite sides are equal. Subtract known sides twice from perimeter, then divide by 2: (124 - 37 - 37 - 25 - 25) / 2 = 0. Therefore, the missing sides are 37 meters and 25 meters.

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Perimeter of triangle measuring 14 centimeters?

Each side is 14 cm so, 14 cm*3 = 42cm

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Perimeter of square with sides measuring 12 meters?

A square has 4 equal sides. So, 12 m * 4 = 48 meters.

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Perimeter of hexagon with equal sides measuring 8 centimeters?

A hexagon has 6 equal sides. So, 8 cm * 6 = 48 meters.

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Perimeter of rectangle with sides measuring 8 meters and 10 meters?

Add all sides: 8 m + 10 m + 8 m + 10 m = 36 meters

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Study Notes

  • This is a quiz testing knowledge of perimeters of various shapes

Question 1

  • A rectangle has sides measuring 4 yards, 3 yards, 4 yards, and 3 yards
  • The perimeter of the rectangle is 14 yards.

Question 2

  • A square has side lengths of 10 centimeters
  • The perimeter of the square is 40 cm

Question 3

  • Triangle A has a perimeter of 44 feet
  • Two sides measure 10 feet and 16 feet
  • The missing side length is 18 feet

Question 4

  • Rectangle D has a perimeter of 124 meters
  • Two side lengths are 37 meters and 25 meters
  • The missing side lengths are 37 meters and 25 meters

Question 5

  • Match shapes to perimeters
  • A triangle with equal sides measuring 14 centimeters matches with 42 centimeters
  • A square with sides measuring 12 meters matches with 48 meters
  • A hexagon with equal sides measuring 8 centimeters matches with 48 centimeters
  • A rectangle with pairs of opposite sides measuring 8 meters and 10 meters matches with 36 meters

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