Question

If diameter of circle
is 3.5cm then its
area
is.​

Answer 1

Answer:

Circle

Solve for area

A≈9.62cm²

Step-by-step explanation:

Diameter  

3.5

cm

Using the formulas

A=πr2

d=2r

Solving forA

A=1

4πd2=1

4·π·3.52≈9.62113cm²

Answer 2

Answer:

Area of circle is

$9.62 {cm}^{2}$

Step-by-step explanation:

Given that

Diameter of circle is 3.5cm.

To calculate

Area of circle

Solution

As we know that

$area \: of \: circle = \pi \times {radius}^{2}$

As here diameter is given and we know that radius is always half of its diameter hence

$radius = \frac{3.5}{2}$

hence

$radius = 1.75cm$

hence

$area \: of \: circle = \pi \times {1.75}^{2}$

put

$\pi = \frac{22}{7}$

$area \: of \: circle = \frac{22}{7} \times 1.75*1.75$

hence by multiplication and division we get

$area \: of \: circle = 9.62 {cm}^{2}$