Question

Use Pi is equal to 3.14 to find the diameter of a circle whose area is 7850 metre square

Answer 1

Answer:

100m

Step-by-step explanation:

By using Area of circle formula :

$\implies$ $\sf{A=πr^2 }$

$\implies$ $\sf{7850=3.14×r^2 }$

$\implies$ $\sf{r^2={\Large\frac{7850}{3.14}} }$

$\implies$ $\sf{r=\sqrt{2500} }$

$\implies$ $\sf{r=50 }$

$\implies$ $\sf{d=2×r }$

$\implies$ $\sf{d=2×50 }$

$\implies$ $\boxed{\sf{d=100m}}$

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