radius of a circle is 3.5 CM . find its circumference and area
rahul767:
2 ^r= 2 x 22/7 x r
Answers
Answered by
86
Circumference= 2πr
=2 ×22/7×3.5
=2×22×0.5
=22cm
Area=πr²
=22/7×3.5×3.5
=11×3.5
=38.5cm²
=2 ×22/7×3.5
=2×22×0.5
=22cm
Area=πr²
=22/7×3.5×3.5
=11×3.5
=38.5cm²
Answered by
7
Given,
The radius of the circle = 3.5 cm.
To Find,
The circumference and the area of the given circle,
Solution,
We know that for any circle with a radius r unit,
- The area of the circle = π uni,
- The circumference = 2πr unit.
So here r =3.5cm.
∴The area of the circle = π×(3.5
=×12.25 c.
=38.5c.
The circumference of the circle is = 2××3.5 cm.=22 cm.
Hence, The circumference of the circle is 22 cm and the area is 38.5 c.
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