Lesson: Estimating Areas of Irregular Shapes

In this lesson, we will learn how to find the area of irregular polygons and estimate the area of irregular shapes using a grid of unit squares.

Sample Question Videos

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Worksheet: Estimating Areas of Irregular Shapes • 22 Questions • 3 Videos

Q1:

Suppose each square in the shown grid is a square centimetres. What is the area of the coloured shape?

Q2:

Estimate the area of the figure.

Q3:

Find the area of the shape.

Q4:

Find the area of the shape.

Q5:

Determine the area of the figure.

Q6:

Find the area of the shape given that each square represents 1 square centimetre.

Q7:

Work out the area of the shaded shape. Each square represents 1 square centimetre.

Q8:

Estimate the area of the given figure.

Q9:

Estimate the area of the figure.

Q10:

Which is the best estimate of the area of the figure?

Q11:

Estimate the area of the shaded part.

Q12:

Find the area of this shape. Remember that the area of each small square is 1.

Q13:

Find the area of this shape. Remember that the area of each square is 1.

Q14:

Find the area of the shape by counting the squares.

Q15:

Estimate the area of the figure.

Q16:

Which is the best estimate for the area of this shape? Remember that the area of each small square is 1.

Q17:

Find the area of this shape. Remember that the area of each small square is 1.

Q18:

A landscape architect designed a pond. Estimate its area.

Q19:

The diagram shows the floor plan for a tree house. One square on the grid represents 1 square foot. About how many square feet is the area of the floor?

Q20:

Marwa has drawn a shape with an area of 12 square units.

Which two shapes have an area that is different from Marwa’s shape?

Q21:

Find, to the nearest tenth, the area of the shaded region.

Q22:

Select the shape which has the largest area.

Estimate the area of the largest shape (to the nearest whole square unit).

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