Question

if the circumference of a circular sheet is 132 cm, find its radius and area​

Answer 1

Answer:

The radius of the circle is 21 cm and the area of the circle is 1386  c$m^{2}$.

Step-by-step explanation:

Given:

Circumference of the circular sheet = 132 cm

Formula used for finding circumference of a circle = 2$\pi$r

Let us assume the radius of the circle as r.

Solving,

=> 2 * 22/7 * r =  132 ( Taking value of pie as 22/7)

=> 44/7r = 132

=> 44r = 132 * 7

=> 44r = 924

=> r = 924 / 44

=> r = 21

Therefore, Radius of the circle is 21 cm.

Now we have to find the area,

Formula for finding the area of = $\pi$$r^{2}$

Area of the circular sheet = 22/7 * 21 * 21

= 1386 c$m^{2}$

Therefore, the radius of the circle is 21 cm and the area of the circle is 1386  c$m^{2}$

Answer 2

SOLUTION:-

Given:

The circumference of a circular sheet is 132cm.

To find:

•Radius

•Area of circular sheet.

Explanation:

The distance around a circle is called the circumference.

We have,

Circular sheet= 132cm

We know that, formula of the circumference of the circle= 2πr

=) 2 × 22/7 × r = 132

=) 44/7 ×r = 132

=) r= 132 ×7 /44

=) r= 3×7

=) r = 21cm

Now,

Area of the circular sheet = πr²

=) 22/7 × 21cm × 21cm

=) 22 × 3cm×21cm

=) 1386cm²

Thus,

The radius of the circular sheet is 21cm.

The area of the circular sheet is 1386cm².

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