Question

find the area of triangle whose base is 5.4 cm and height is 8 dm​

Answer 1

Answer:

216 $cm^{2}$

Step-by-step explanation:

8 dm = 80 cm {1 dm = 10 cm}

Area of triangle = ($\frac{1}{2}$*80*5.4) $cm^{2}$

Therefore, Area of triangle = 216 $cm^{2}$

Answer 2

Answer:

Area of a triangle is $216$ $cm^{2}$.  

Step-by-step explanation:

Given : Base of a triangle (b) = $5.4$ cm

           Height of a triangle (h) = $8$ dm

To find : Area of a triangle = ?

Solution :

• It is given that the Base of a triangle = $5.4$ cm

           Height of a triangle = $8$ dm

• We know that, $1$ dm = $10$ cm
• ∴ Height of a triangle = $8$ dm = $8*10=80$ cm
• The formula for area of a triangle is given by,

       Area of a triangle = $\frac{1}{2} *b*h$  

                                 $= \frac{1}{2} *5.4*80$

                                 $=5.4*40$

                                 $=216$ $cm^{2}$

• ∴ Area of a triangle is $216$ $cm^{2}$.