Question

the radius of circle is 238 cm. If an arc subtends an angel 45° at the center then the length of the arc in cm is
1) 187
2) 178
3) 781
4) 185

Answer 1

Hi friend
radius of circle= 238 cm
perimeter of circle = 2 pi r 
                                = 2 x 34 x 22
                                = 1496 cm
length of arc = angle/360 x perimeter
                       =1/8 x 1496
                       =1496/8 
                       = 187 cm
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so, the length of arc is 187 cm

Answer 2

Answer:

radius of the circle =238

Step-by-step explanation:

perimeter of circle=2pi r

=2×34×22

=1496 cm

length of arc = angle/360×perimeter

=1/8×1496

=1496/8

=187 cm