IXL | Area of quadrilaterals

What is the missing length?

3 mm

area

millimeters

ref_doc_title.

Learn with an example

question

What is the missing length?

6 ft

area

feet

key idea

Area of a rectangle:

area

base

height

solution

Find the base, height, and area of the rectangle.

base:

height: 6 ft

area: 36

Use the formula:

area

base

height

Now look for the units. The area is measured in square feet, so lengths are measured in feet. So,

6 feet

Looking for more? Try these:

Lesson: Area of rectangles

Lesson: Area of parallelograms

Lesson: Area of trapezoids

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Teacher tools

Work it out

Not feeling ready yet? These can help:

GG.2Area of rectangles and squares

GG.4Area of parallelograms

GG.8Area of trapezoids

Lesson: Area of rectangles

Lesson: Area of parallelograms

Lesson: Area of trapezoids

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