Question

Area if triangle is 18cm2. The base is 4 cm. What is the height?​

Answer 1

`\bf \underline{ \underline{Given : }}`

• Area of triangle = 18 cm²

• Base = 4 cm

`\bf \underline{ \underline{To \: find \: out : }}`

Find the height of a given triangle.

`\bf \underline{ \underline{Solution : }}`

We know that,

`\sf \: Area \: of \: traingle = (1)/(2) * base * height`

`\sf \red \star \: Substituting \: the \: values ..`

`\sf \implies18 = \frac{1}{ \cancel{2}} * { \cancel4 }* height`

`\sf \implies \: 18 = 2 * height`

`\sf\implies \: height = \cancel(18)/(2)`

`\sf\implies \: height = 9 \: cm`

`\sf\therefore \: The \: height \: of \: triangle \: is \: 9 \: cm.`

Answer 2

9 cm

Explanation:

Area of a triangle is 1/2(base*height)

Area=18

Base=4

So 1/2(4*h)=18

2h=18

h=18/2=9