Question

Find diameter of circular region when it's area is 154 sq.m ?

Answer 1

Answer : 14 m

Solution :
_________

Given that : Area of circular region = 154 m²

As we know that : Area of Circle

$\pi {r}^{2}$

Now, according to the question :

$\pi {r}^{2} = 154 \\ \\ = > \frac{22}{7} \times {r}^{2} = 154 \\ \\ = > {r}^{2} = 49 \\ \\ = > r = 7 \: m$

As we know that : Diameter = 2 × Radius

Then, Diameter = 2×7 = 14 m

So, the diameter of the circular region will be 14 m.

Answer 2

hey mate here's ur answer

let 'r' be the radius of circle and 'd' be the diameter

given area of circle = 154 m²

we know that

area of circle = πr²

so, πr² = 154

(22/7)r = 154

r² = 154* 7/22

r² = 7*7

r² = 49

r = 7

now, diameter = 2r = 2*7 = 14 m