Question

The diameter of a circle is 9.8m. Find its area.​

Answer 1

Answer:

diameter of circle = 9.8

radii = D/2 = 9.8/2 = 4.9 m

Step-by-step explanation:

area of circle = pie × r²

= 22/7 × 4.9 × 4.9

= 75.46

answer is 75.46

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Answer 2

Answer:

Area of circle is

$75.429 {m}^{2}$

Step-by-step explanation:

Given that

Diameter of circle is 9.8m.

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

$radius = \frac{9.8}{2}$

hence

$radius = 4.9m$

hence

$area \: of \: circle = \pi \times {4.9}^{2}$

put

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

$area \: of \: circle = \frac{22}{7} \times 4.9*4.9$

hence by multiplication and division we get

$area \: of \: circle = 75.429 {m}^{2}$