Answer:
Step-by-step explanation:as we know that arc length is
s=r*∅
as given angle in degree so convert it in radian we get
angle=2.09 rad
r=3.5 cm
hence we get
s=3.5*2.09 =7.315 cm
perimeter of sector = s +d where d=2*r=2*3.5=7 cm
perimeter of sector=7.315+7=14.315 cm
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The answer is 2/3 because 3/8x16/9= 2/3
The first and the 2nd one are correct because x is 21 and y is 49
3 and 4 at wrong
