Question

calculate the area of a triangle formed by (4,0),(0,0) and (0,4).​

Answer 1

area of triangle = 1/2 ×base × height

= 1/2 × 4 ×4

= 2×4

=8

Answer 2

Firstly, As all sides of triangle are equal. therefore, It will form equilateral triangle with all sides of 4 units. Now using the formula

$\sqrt{3} \div 4 \times \: a {}^{2}$

you will get your answer

$4 \sqrt{3}$

Hope, it will help you