1. The figure shows two circles with the same centre. The radius of the larger circle
is 10 cm and the radius of smaller circle is 4 cm.
Find : (i) the area of larger circle.
(ii) the area of smaller circle.
(iii) the shaded area between the two circles (r=3.14)
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Answer:
Area of shaded region = π(R
2
−r
2
)
= 3.14(10
2
−4
2
)
= 3.14×84=263.76cm
2
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