Find the area of a rhombus one side of which measures 20 cm and one diagonal is 23 cm.
Choose the correct choice from the following choices:
A) 100cm2
B) 150cm2
C) 300cm2
D) 368cm2
E) 400cm2
Explanation: Let other diagonal = 2x cm.   Since diagonals of a rhombus bisect each other at right angles, we have:   (20)2 = (12)2 + (x)2 =&gt;x =√(20)2 – (12)2= √256= 16 cm. _I   So, other diagonal = 32 cm.   Area of rhombus = (1/2) x (Product of diagonals) =(1/2× 23 x 32) cm2 = 368 cm2   Answer: Option 368cm2
<result>D</result>
Find the area of a rhombus one side of which measures 20 cm and one diagonal is 23 cm.