A) \[36\sqrt{3}\,\,cm\]
B) \[72\sqrt{3}\,\,cm\]
C) \[18\sqrt{3}\,\,cm\]
D) None of these
Correct Answer: A
Solution :
Area of equilateral\[\Delta =\frac{\sqrt{3}}{4}{{(side)}^{2}}\] \[72\sqrt{2}=\frac{\sqrt{3}}{4}\times {{(side)}^{2}}\] \[{{(side)}^{2}}=\frac{72\times 4\times \sqrt{3}}{\sqrt{3}}\,cm\] Side\[=\sqrt{288}=12\sqrt{2}cm\] Perimeter of equilateral \[\Delta =3\times \] Side \[=3\times 12\sqrt{2}=36\sqrt{3}cm\]
You need to login to perform this action.
You will be redirected in
3 sec
