Question

find the circumference of a circle whose area is 6 point 16 square centimetre

Answer 1

Area of circle = 6.16 cm^2

=> pi *r^2 = 6.16

=> 22 r^2 /7 = 6.16

=> r^2 = 6.16 * 7 / 22

=> r^2 = 0.28 * 7

=> r^2 = 1.96

=> r = 1.4 cm


Circumference = 2* pi *r

= 2* 22 * 1.4 / 7

= 44*0.2

= 8.8 cm

Answer 2

hiii!!!

here's ur answer...

area of the circle = 6.16cm²

→ πr² = 6.16cm²

→ 22/7×r² = 6.16cm²

→ r² = 6.16×7/22

→ r² = 0.28×7

→ r² = 1.96

→ r = √1.96

→ r = 1.4cm

VERIFICATION:-

area of circle = πr²

= 22/7×1.4×1.4

= 43.12/7

= 6.16cm²

hence verified

thus the radius of the circle is 1.4cm.

now circumference of the circle = 2πr

= 2×22/7×1.4

= 61.6/7

= 8.8cm

hope this helps..!

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