Question

Perimeter of a semicircular field is 110m. Find the diameter of the field​

Answer 1

Answer:

21.38m

Step-by-step explanation:

Perimeter of a semicircle = $\pi r + d$

So, $\pi r + 2r = 110$

⇒ $r (\pi + 2) = 110$

⇒ $r (\frac{36}{7}) = 110$

⇒ $r = 110$ × $\frac{7}{36}$

⇒ $r = \frac{770}{36}$

⇒ $r = 21.38$