Question

find area of circle of diameter 8.4 metre​

Answer 1

Answer

55.44m^2

Step-by-step explanation:

diameter of the circle=8.4m

radius=8.4/2=4.2m

area of the circle=πr2

22/7×4.2×4.2

55.44m^2

Answer 2

Step-by-step explanation:

diameter of a circle=8.4m;

radius of a circle=diameter of a circle/2;

So,the radius of a circle=8.4/2;

=4.2m;

Area of a circle=(PI*Radius*radius);

=[(22/7)*(4.2)^2 [(4.2)^2=(4.2×4.2)]

=55.44m^2]

NOTE:[If PI value is not given.] OR

Area a circle=(PI*Radius*radius);

=[(3.14)*(4.2)^2

=55.39896m^2 ]

NOTE:[If PI value is given.]

NOTE:[The PI value is different so the answer is also different because PI is an Irrational Number and it has different values.]

The value of PI is 3.1428571429.

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