Rhombus A2p

Rhombus area is 13 cm2 and its height is 5cm long . Determine a perimeter of this rhombus.

Correct result:

x =  10.4 cm

Solution:

5a = 13
x = 4a

5•a = 13
x = 4•a

5a = 13
4a-x = 0

a = 135 = 2.6
x = 525 = 10.4

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