Question

perimeter of a semi circular field is 180m . calculate the diameter of a field​

Answer 1

Answer:

I believe the answer is 30 but I could also be 100% wrong.

Step-by-step explanation:

sorry I couldn't be exact :)

Answer 2

Answer:

Given,

Perimeter of a semi - circular field = 180m

To Find :-

Diameter of the Field.

Solution :-

We know that,

Perimeter of Circle = 2πr

Then, Perimeter of the Semi Circle should be half.of the Perimeter of the Circle.

$\sf\implies Perimeter of the Semi Circle = \dfrac{2πr}{2}$

Perimeter of the Semi Circle = πr.

Substituting the Value :-

Perimeter = 180m

π = $\sf\dfrac{22}{7}$

180m = $\sf\dfrac{22}{7} \times r$

r = $\sf 180 \times \dfrac{7}{22}$

r = $\sf\dfrac{1260}{22}$

r = $\sf\dfrac{630}{11}$

$\sf\therefore Diameter = 2 \times radius$

Diameter = $\sf 2 \times\dfrac{630}{11}$

Diameter = $\sf\dfrac{1260}{11}$

$\sf\therefore Diameter = \dfrac{1260}{11}$