the area of a circle is 1386m2 find its circumference
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Answered by
7
Area of Circle = 1386m²
πr² = 1386 m²
(22/7)r² = 1386 m²
r² = 1386×7/22
r² = 63×7 = 441
=> r = 21m
Circumference of Circle = 2πr
= 2×(22/7)×21
= 2×22×3
= 132m
πr² = 1386 m²
(22/7)r² = 1386 m²
r² = 1386×7/22
r² = 63×7 = 441
=> r = 21m
Circumference of Circle = 2πr
= 2×(22/7)×21
= 2×22×3
= 132m
RehanAhmadXLX:
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Answered by
5
1386 = area
1386 = πr^2
1386 = 22/7 x r^2
1386 x 7/22 = r^2
441 = r^2
√441 = √r^2
21 m = r
circumference = 2πr
= 2 x 22/7 x 21
= 2 x 22 x 3
= 132 m
1386 = πr^2
1386 = 22/7 x r^2
1386 x 7/22 = r^2
441 = r^2
√441 = √r^2
21 m = r
circumference = 2πr
= 2 x 22/7 x 21
= 2 x 22 x 3
= 132 m
:-)
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