Question

Find the area of circumference of circle of radius 28 cm​

Answer 1

Answer:

We know that, Circumference of the circle i.e, C=2πr

=(2×22/7×28)

=(56×22/7)

=176 cm

Thus, the circumference of the circle is 176 cm

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Answer 2

Answer:

Hence, the circumference of circle having radius 7 cm will be 44 cm while area will be 2464 sq. cm.

Step-by-step explanation:

In context to question asked,

We have to determine the circumference of the circle.

From the data given in the question,

We have,

Radius of circle = 7 cm

As we know that

As we know that,

We have,

formula for finding circumference of circle is $2\times \Pi r$

Area of circle is $\Pi r^2$

So, for determining the value of circumference and area of circle, we will put the value of radius of circle in above formula.

Thus we will get,

Circumference of circle  $2 \times \Pi r = 2 \times \frac{22}{7} \times 7 = 2 \times 22 = 44\:cm$

Area of circle will be

$\Pi r^2 = \frac{22}{7} \times 28 \times 28 \\=>22 \times 4 \times 28\\=>2464\:cm^2$