Question

plz give me ans in this question no 4

Answer 1

circumference=2πr

for circle with radius 77cm
circumference=2×π+×77
for second circle
circumference=2×π×91


difference between their circumference
=2×π×91- 2×π×77
=2π(91-77)
=2×π×14
$= 2 \times \frac{22}{7} \times 14 \\ = 2 \times 22 \times 2 \\ = 44 \times 2 \\ = 88cm$



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