The diagonals of a rhombus are 15 cm and 21 cm. Find its area?	Choices:
A) 277 B) 266 C) 150 D) 288 E) 157.5
1/2 * 15 * 21= 
<gadget id="calculator">1/2 * 15 * 21</gadget>
<output>315/2 = around 157.5</output>
157.5   Answer: 157.5
<result>E</result>
The diagonals of a rhombus are 15 cm and 21 cm. Find its area?