Question

radius of a circle is 10cm find its circum ference and area ( use π =3.14)​

Answer 1

Answer:

area =100π≈314.16 to 2 dec. places. Explanation: the area (A) of a circle is calculated using the formula. ∙xA=πr2←r is the radius.

Answer 2

Here, radius given = 10cm

We know, Circumference of a circle = 2 pi r

So, here, 2 × 3.14 × 10 = 62.8 cm

Therefore, Circumference of the circle is 62. 8 cm.

Now, we know that area = pi r²

= 3.14 × 10 ×10 = 314 cm² Answer.

Therefore, Area of circle is 314 cm²