Question

find the semi perimeter of an equilateral triangle of area 3√3cm

Answer 1

Hey mate.....

Here is your answer

Area of a equilateral triangle =
$\sqrt{3a {}^{2} } \div 4$
$3 \sqrt{3 = \sqrt{3a {}^{2} } } \div 4$
$12 \sqrt{3} = \sqrt{3a {}^{2} }$
$a {}^{2} = 12$
$a = 2 \sqrt{3}$
Perimeter =
$3a$
$3 \times 2 \sqrt{3}$
$= 6 \sqrt{3}$
Hope this helps you