Question

If the radius of a circle is increased by 10 %, then corresponding increase in the area of the circle is ...... · (???? = 3.14) select a proper option (a), (b), (c) or (d) from given options so that the statement becomes correct.
(a) 19%
(b) 10%
(c) 21%
(d) 20%

Answer 1

Option ( c ) is correct .

Explanation :

Let increase % in radius ( x ) = 10

Corresponding increase in

the area = [ 2x + x²/100 ]%

= [ 2×10 + ( 10² )/100 ]

= [ 20 + 100/100 ]

= 20 + 1

= 21%

••••

Answer 2

Step-by-step explanation:

option c is correct answer