b. The radius of a circle is 56cm. Find its circumference and area.
Take (n =22/7)
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Answer:
C≈351.86cm
r Radius
C=2πr=2·π·56
≈351.85838cm
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GIVEN:
radius of a circle = 56cm
To find:
circumference=?
area=?
circumference of circle= 2πr
=2×22×56
7
= 2×22×8
=44×8
=353cm
area of circle= πr²
= 22×(56)²
7
= 22×56×56
7
= 22×56×8
=9856cm²
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