Question

find the area of equilateral triangle whose side 10cm. what is the area of triangle whose sides are 4,5,5.

Answer 1

area of equilateral triangle
$\sqrt{3} \div 4 \times 100 \\ \sqrt{3} \times 25 \\ it \: is \: the \: area \: of \: euilateral \: triangle$
area of triangle
firstly find out semi perimeter of triangles
4+5+5/2=14/2=7
now with the help heron's formula
u find out triangle area

Answer 2

Answer:

Step-by-step explanation:

Given :-

Sides of equilateral triangle = 10 cm

To Find :-

The area of equilateral triangle.

Formula to be used:-

Area of equilateral triangle = $(\frac{\sqrt{3} }{4}.a^2 )sq \: units.$

Solution :-

= $(\frac{\sqrt{3} }{4}.a^2 )sq \: units.$

= $(\frac{\sqrt{3} }{4}.10.10)cm^2$

= $(\frac{1.73X100}{4} )cm^2$

= $\frac{173}{4}cm^2$

= $43.25 \: cm^2$

Hence, the area of the given triangle is 43.25 cm².