Question

3. Find the area of an equilateral triangle of side 14 cm. (Take V3 = 1.73)​

Answer 1

Answer:

Step-by-step explanation:

                                                                                                                             =area of equilateral triangle = (root 3 /4)a^2

=area = (1.73/4) x 14^2

=0.4325 x 196

=84.77

Answer 2

Answer:

Area of equilateral triangle is $84.77\ cm ^{2}$ .

Step-by-step explanation:

To find : area of equilateral triangle .

Given : side of equilateral triangle is 14 cm. (Take V3 = 1.73)​

Solution :

• As per given data we know that side of equilateral triangle is 14 cm . We have to find area of this triangle .
• Therefore , to find area we use following formula ,
• Area of  equilateral triangle = $\frac{\sqrt{3} }{4}a^{2}$   , where $' a '$ is the side of equilateral triangle .
• Here , we have $a = 14\ cm$ and $\sqrt{3} = 1.73$ , substituting the values we find area of triangle .
• Area of  equilateral triangle =  $\frac{1.73}{4}\times( 14 )^{2}$

                                                       $=\frac{1.73 }{4} \times 196\\\\= 1.73 \times 49\\\\= 84 . 77\ cm ^{2}$