Question

$\frac{1}{2 } \times \frac{4}{1} \times \frac{5}{1}$it's the area formula

Answer 1

the area of triangle is equal to

$A=\frac{1}{2}\cdot b\cdot h$

In this problem we have

b=9 in

h=7 in

substitute

A=(1/2)*(9)*(7)

A=63/2

A=31.5 in2

Part 9

the area is equal to

A=(1/2)*(2)*(2)

A=2 ft2

because

the formula of area of triangle is

$A=\frac{1}{2}\cdot b\cdot h$

we have

b=2 ft

h=2 ft

substitute

$\begin{gathered} A=\frac{1}{2}\cdot2\cdot2 \\ A=\frac{4}{2}=2\text{ ft2} \end{gathered}$

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