Question

what is the answer of the Q15​

Answer 1

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

here a =6

So answer is

$54 \sqrt{3}$

I hope it helps you...

Answer 2

Side of the square=9cm

Perimeter of the square=4*side=9*4=36 cm

Perimeter of square=perimeter of hexagon

perimeter of hexagon =36 cm

Perimeter of hexagon=6*side

36=6*side

Side=36/6= 6cm

Area of hexagon =3√3/2 a^2

Area of hexagon =3√3/2 6^2

=93.53 cm sq

Hope it helps you,pls mark as brainliest answer