Question

what is the area of an equilateval triangle with side 15cm ​

Answer 1

Step-by-step explanation:

$A</p><p></p><p>≈</p><p></p><p>97.43</p><p></p><p>cm²</p><p></p><p>$

Answer 2

Step-by-step explanation:

Let the radius of the circle be r , this circle also circumscribing the equilateral triangle of side a = 15 cm

so from the relation between radius and side of triangle we get( hint: find by drawing the diagram :) )

$r = \frac{15}{ \sqrt{13} } cm$

Area of the circle=

$\pi( \frac{15}{ \sqrt{3} } ) {}^{2}$

3.14X

$\frac{225}{3}$

=235.5cm²