Question

Find area and circumference of circle whose radius is 14 cm. (Take ,22/7).
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Answer 1

given is radius "r"= 14cm

Step-by-step explanation:

area of circe= $\pi r^{2}$

= 22/7 x 14 x 14

= 22 x 2 x14

= 44x 14 cm sq.

= 616 cm sq.

circumference of circle= $2\pi r$

=2x 22/7 x14

= 2 x 22x 2

= 88cm

Answer 2

Answer:

Area of a circle is $616$ $cm^{2}$ and circumference of a circle is $88$ cm.

Step-by-step explanation:

Given : Radius of a circle (r) = $14$ cm

To find : The area and circumference of circle.

Solution :

• The radius of a circle = $14$ cm
• We have to find that the area and circumference of circle.
• Circle is a closed set of points which are at equal distance from the center of a circle.
• The formula for area of a circle is given by,

       Area of a circle = $\pi r^{2}$

• Use the value of $\pi =\frac{22}{7}$

                              = $\frac{22}{7} *14^{2}$

                              = $\frac{22}{7} *196$

                              = $22*28$

                              = $616$ $cm^{2}$  

• Now, the circumference of a circle is given by,

           Circumference of a circle = $2\pi r$

                                                = $2*\frac{22}{7} *14$

                                                = $2*22*2$

                                                = $88$ cm

• ∴  Area of a circle is $616$ $cm^{2}$ and circumference of a circle is $88$ cm.