# Lesson Worksheet: Perimeter of Polygons Mathematics • 3rd Grade

In this worksheet, we will practice measuring the lengths of shapes and adding to find their perimeter.

Q1:

Find the perimeter of this quadrilateral. Q2:

Find the perimeter of this quadrilateral. Q3:

Find the perimeter of the figure. Q4:

Find the perimeter of the shape below. Q5:

What is the perimeter of the shape below? Q6:

Find the perimeter of the shape. Q7:

If the perimeter of the shown figure is 54, determine the length of the last side. Q8:

A square has side lengths of 10 cm and a triangle has sides of length 13 cm, 12 cm, and 3 cm. Which shape has the longer perimeter?

• Athe triangle
• Bthe square

Q9:

Given that the perimeter of the figure is 40 yd, determine the length of the missing side. Q10:

The lengths of two sides of an octagon-shaped table are 24 feet each, and the other six sides are 8 feet each. What is the perimeter of that table?

Q11:

The perimeter of a regular heptagon is 42. What is the length of a side?

Q12:

What is the side of a regular hexagon of perimeter 966?

Q13:

What is the perimeter of the following hexagon? Q14:

How many units of length is the perimeter of the hexagon? Q15:

Benjamin’s garden has 5 sides which are equal in length. If each side is 18 feet long, determine its perimeter.

Q16:

The perimeter of the shape is length units. Q17:

Find the perimeter of a triangle whose side lengths are 7, 25, and 22.

Q18:

Find the perimeter of a triangle whose side lengths are 8 cm, 10 cm, and 4 cm.

Q19:

A triangle of perimeter 37 has two sides of lengths 11 and 8. What is the length of the third side?

Q20:

Calculate the perimeter of the triangle. Q21:

Determine the perimeter of the triangle whose sides have the same length of 22 cm.

Q22:

A triangle has a perimeter of 44. If two of the sides have lengths 19 and 13, what is the length of the third side?

Q23:

What is the perimeter of this triangle? Q24:

What is the perimeter of the given shape? Q25:

Which shape has the biggest perimeter? • AShape A
• BShape B
• CShape C