IXL | Area of triangles and trapezoids | 7th grade math

or

What is the area?

8 cm

5 cm

square centimeters

ref_doc_title.

or

Learn with an example

question

What is the area?

8 in

4 in

square inches

key idea

Area of a triangle:

area

=

1

2

base

height

solution

Find the base and height of the triangle.

base: 8 in

height: 4 in

Use these numbers in the formula.

area

=

1

2

base

height

=

1

2

8

4

=

16

Now find the units. The lengths are measured in inches, so the area is measured in square inches.

The area is 16 square inches.

Looking for more? Try these:

Lesson: Area of triangles

Lesson: Area of trapezoids

or

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Work it out

Not feeling ready yet? These can help:

BB.2Area of rectangles and parallelograms

T.8Solve two-step equations without parentheses

Z.5Classify quadrilaterals I

Lesson: Area of triangles

Lesson: Area of trapezoids