Question

If the perimeter of the rhombus is 20 cm and length of one of its diagonal is 6 cm, the length of the other diagonal is -

• A. 4 cm
• B. 6 cm
• C. 8 cm
• D. 7 cm

Answer 1

The correct option is C

8 cm

Given perimeter 4a = 20

a = 5 cm

Length of one diagonal = 6 cm

Let the length of the other half diagonal be `x'

3${}^2$ + x${}^2$ = 25

x = 4 cm

Length of the diagonal = 8 cm