Two concentric circles have radii of 21 cm and 14 cm respectively. The area between the two circles is
a)462 sq cm
b)762 sq cm
c)770 sq cm
d)780 sq cm
please send fast answer
Answers
Answered by
1
Answer:
area of circle 1-area of circle 2 =1386-616=770
so, correct answer is option c) 770 sq cm
Answered by
9
Radius of larger circle(R) = 21cm
Radius of smaller circle (r) = 14cm
Area between two circles = area of larger circle - area of smaller circle
= π R^2- π r^2
= 22/7 ×21×21 -22/7×14×14
= 1386 - 616
= 770 sq cm
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