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Big Ideas Math: Modeling Real Life, Grade 6

BI

Big Ideas Math: Modeling Real Life, Grade 6 View details

2. Areas of Triangles

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Exercise 11 Page 295

To find the area, calculate half of the product of the base and the height.

6 cm^2

Practice makes perfect

Let's find the area of the given triangle. The area of a triangle is half the product of its base and its height.

In the given triangle, we can see that the base is 3 centimeters and that the height is 4 centimeters. We can substitute these two values into the formula for the area of a triangle and simplify. Let's do it!

A=1/2bh

b= 3, h= 4

A=1/2( 3)( 4)

▼

Evaluate right-hand side

Multiply

A=1/2(12)

MoveRightFacToNumOne

1/b* a = a/b

A=12/2

Calculate quotient

A=6

The area of the triangle is 6 square centimeters.

Subchapter links

Try It p.292-293

Self-Assessment for Concepts & Skills p.293

Self-Assessment for Problem Solving p.294

Review & Refresh p.295