Question

find the area of Stadium if its diameter is 2.5 km the value of pi 3.14

Answer 1

Area of the stadium= πr^2
Area = 3.14×2.5/2×2.5/2
Area = 1.57×6.25/2
Area= 4.90625km^2
Area = 4.90625×1000m×1000m
Area= 4,906,250m^2
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Answer 2

$\fontsize{18}{10}{\textup{\textbf{The area of the stadium is 4.91 sq. km.}}}$

Step-by-step explanation:

We know that the shape of a stadium is a CIRCLE and the area of a circle with radius r units is

$A_c=\pi r^2.$

According to the given information, we have

$\textup{diameter of the circle}=2.5\\\\\Rightarrow 2r=2.5\\\\\Rightarrow r=\dfrac{2.5}{2}\\\\\Rightarrow r=1.25.$

So, the radius of the stadium is 1.25 km.

Therefore, the area of the stadium is given by

$A=\pi r^2=3.14\times (1.25)^2=3.14\times 1.5625=4.90625\sim 4.91.$

Thus, the required area of the stadium is 4.91 km².

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Question : Find the circumference of the circle diameter 2.5 m take pie 3.14 .

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