Question

The area of a minor sector of ⦿(0, 15) is 150. The length of the corresponding arc is ...... (???? = 3.14) select a proper option (a), (b), (c) or (d) from given options so that the statement becomes correct.
(a) 30
(b) 20
(c) 90
(d) 15

Answer 1

the answer is 20/58=2r

20/58*2

20/116=r

0.17241379310344=r

Answer 2

Option ( b ) is correct.

Explanation :

Radius of the sector ( r ) = 15cm

Area of the minor sector ( A )

= 150 cm²

Let length of the arc = l

l = ( 2A )/r

=> l = ( 2 × 150 )/15

=> l = 2 × 10

=> l = 20 cm

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