question_answer

BEST is a rhombus in which \[\angle \mathbf{T}=\mathbf{12}{{\mathbf{0}}^{{}^\circ }}\]and \[TE=6cm.\]The perimeter of the rhombus is ___cm

A)  24cm    

B)  12cm          

C)  18cm                          

D)  30cm

Correct Answer: A

Solution :

(a): Construct a rough sketch of BEST with given data TES is an equilateral \[\Delta \] \[\Rightarrow a=6cm\] \[\Rightarrow perimeter,4a=24cm.\]