Exercise 9 Page 334

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

175 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 25 centimeters and that the height is 14 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

SubstituteII

b= 25, h= 14

A=1/2( 25)( 14)

▼

Evaluate right-hand side

Multiply

A=1/2(350)

MoveRightFacToNumOne

1/b* a = a/b

A=350/2

CalcQuot

Calculate quotient

A=175

The area of the triangle is 175 square centimeters.

Subchapter links

1 Areas of Parallelograms p.333

2 Areas of Triangles p.334

3 Areas of Trapezoids and Kites p.335

4 Three-Dimensional Figures p.336

5 Surface Areas of Prisms p.336

6 Surface Areas of Pyramids p.337

7 Volumes of Rectangular Prisms p.337

Exercise 9 Page 334

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