Find x for triangle with 5’ base and 8’ feet

The area of a triangle is equal to

1

2

the base times the height.

1

2

⋅

(

b

a

s

e

)

⋅

(

h

e

i

g

h

t

)

Substitute the values of the base

b

=

5

and height

h

=

8

into the formula for the area of a triangle.

1

2

⋅

5

⋅

8

Combine

1

2

and

5

.

5

2

⋅

8

Cancel the common factor of

2

.

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Factor

2

out of

8

.

5

2

⋅

(

2

(

4

)

)

Cancel the common factor.

5

2

⋅

(

2

⋅

4

)

Rewrite the expression.

5

⋅

4

Multiply

5

by

4

.

20

(

f

t

)

2

the answer is b.)

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