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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 13 Page 295

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

1620 in.^2

Practice makes perfect

We will find the area of the given triangle. The area of a triangle is half the product of its base and its height. Let's visualize the side of the tent we are given in the figure!

In the given triangle, we can see that the base is 60 inches and that the height is 54 inches. 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= 60, h= 54

A=1/2( 60)( 54)

▼

Evaluate right-hand side

Multiply

A=1/2(3240)

MoveRightFacToNumOne

1/b* a = a/b

A=3240/2

Calculate quotient

A=1620

The area of the triangle is 1620 square inches.

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