The perimeter of a non-square rhombus is 20 cm. One of its

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The perimeter of a non-square rhombus is 20 cm. One of its diagonal is 8 cm. The area of the rhombus is

1. 28 sq cm
2. 20 sq cm
3. 22 sq cm
4. 24 sq cm

Correct Option: D

Using Rule 12,

Side of rhombus =	20	= 5 cm
	4

OB = 4 cm
OA = √5² - 4² = √9
= 3 cm
AC = 6 cm

Area of rhombus =	1	d₁d₂	1	× 8 × 6 = 24 sq. cm
	2		2