The area of a sector of a circle of radius 4 cm formed by an arc of length 4.5 cm is?
Options.
A) 8.78  B) 8.67  C) 8.75  D) 8.98  E) 9
(4 * 4.5)/2= 
<gadget id="calculator">(4 * 4.5)/2</gadget>
<output>9</output>
9   Answer:9
<result>E</result>
The area of a sector of a circle of radius 4 cm formed by an arc of length 4.5 cm is?