Railways
Sample Paper
RRB (Group D) Sample Test Paper-10
question_answer
If diagonals of a rhombus are 16 cm and 30 cm. then what is the perimeter (in cm) of the rhombus?
A) 32
B) 64
C) 34
D) 68
Correct Answer:
D
Solution :
[d] Let side of rhombus be x By Pythagorean Theorem, \[{{x}^{2}}={{(15)}^{2}}+{{(8)}^{2}}\] \[{{x}^{2}}=225+64=289\] \[\therefore x=\sqrt{289}=17\,\,cm\] \[\therefore \]Perimeter of rhombus \[=4\times \]side \[=4\times 17\] =68 cm