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The sum of the radii of two circle is 140 cm and the different of their circumference is 88 cm. Find the diameters of the circles

The sum of the radii of two circle is 140 cm and the different of their circumference is 88 cm. Find the diameters of the circles

Grade:12th Pass

2 Answers

Ravi
askIITians Faculty 69 Points
6 years ago
r1+r2=140 ...(1)

2.pi.(r1-r2)=88
r1-r2= (88.7)/(2.22)=28
r1-r2=28 ...(2)

Use equation 1 and 2 to solve for r1 and r2.
Find D1=2r1 and D2=2r2
divya
38 Points
6 years ago
diameters are 126 and 154 resp.

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