The sum of diameter of two circle is 14cm and the difference of their circumference is 8cm .Find the circumference of the two cricle
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Step-by-step explanation:
The sum of diameter of two circle = d1 + d2 = 14cm
the difference of their circumference = 2πr1 - 2πr2 = 8cm
2π(r1-r2) = 8cm
2π d1-d2/2 = 8cm
π(d1-d2) = 8cm
d1-d2. = 8×7/22 = 28/11 = 2.5454cm
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