Question:The difference between the circumference and the radius of a circle is 37 cm. The area of the circle is : 

A `111 cm^2` 
B `148 cm^2` 
C `154 cm^2` 
D `259 cm^2` 

+ Answer
C 

+ Explanation
`2 r - r = 37 or (2 - 1) r = 37`

`or (2 xx 22/7 - 1) r = 37 or (37r)/7`

`= 37 or r = 7.`

:. Area` = r^2 = (22/7 xx 7 xx 7) cm^2`

`= 154 cm^2`

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Irin Moni

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