find the circumference of a circle whose area is 6 point 16 square centimetre
Answers
Answered by
33
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
=> 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
Answered by
21
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..!
★★☺☺☺★★
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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