Difference between circumference & diameter of circle is 28cm. find its radius
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Diameter(d)=2r
circumference =2×22/7×r
Given that 2×22/7×r - d = 28
therefore
2 × 22/7 × r - 2r = 28
2 (22/7 × r - r) = 28
22/7 × r - r = 14
22r - 7r = 14 ×7
15r = 98
r = 98 / 15
r = 6.53 (approx)
circumference =2×22/7×r
Given that 2×22/7×r - d = 28
therefore
2 × 22/7 × r - 2r = 28
2 (22/7 × r - r) = 28
22/7 × r - r = 14
22r - 7r = 14 ×7
15r = 98
r = 98 / 15
r = 6.53 (approx)
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