Question

Find the area of the triangle whose base is 20cmy and the corresponding hieght is 12cm

Answer 1

Answer :

The area of the triangle is 120cm².

Step-by-step explanation :

Figure,

$\setlength{\unitlength}{1cm}\begin{picture}(6,5)\linethickness{.4mm}\put(1,1){\line(1,0){4.5}}\put(1,1){\line(0,1){3.5}}\qbezier(1,4.5)(1,4.5)(5.5,1)\put(-.3,2.5){\large\bf 12cm}\put(2.58,.3){\large\bf 20cm}\put(1.02,1.02){\framebox(0.3,0.3)}\put(.7,4.8){\large\bf }\put(.8,.3){\large\bf }\end{picture}$

Given that,

• Height = 12cm

• Base = 20cm

Solution :

We know that,

$\underline {\boxed{ \bf{Area \: \: of \: \: triangle = \dfrac{1}{2} \times B \times H}}}$

Therefore, by putting the values,

$\bf{\longrightarrow \: \dfrac{1}{2} \times 20 \times 12}$

$\bf{\longrightarrow \: 1 \times 10 \times 12}$

$\bf{\longrightarrow \: 120} \: \star$

Therefore, Area of the triangle is 120cm².