The perimeter of a rhombus is 68 cm and one of its diagonals is 16 cm. Find its area? Choose the correct choice:
A) 247 B) 240 C) 249 D) 244 E) 241
4a = 68 =&gt; a = 17   172 – 82 = 152   1/2 * 16 * 30= 
<gadget id="calculator">1/2 * 16 * 30</gadget>
<output>240</output>
240   Answer: 240
<result>B</result>
The perimeter of a rhombus is 68 cm and one of its diagonals is 16 cm. Find its area?