Circles A and B are concentric circles. If radius of circle A is 10 and area of the
shaded portion is 64n, what is the radius of circle B?
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The shaded portion of the figure, given along side,shows two concentric circles.If the circumference of the two circles are 396 cm and 374 cm , find the ...
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Given, 2pi r = 374cm 2pi R = 396cm Therefore, 2pi r = 374cm = >r = 374 × 72 × 22 = 59.5 2pi R = 396cm = >R = 396 × 72 × 22 = 63 Area of shaded portion ... More
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