QUESTION IMAGE
Question
part iii:
the students have planted a semicircle flower garden that requires some fencing
a) find the amount of fencing to the nearest foot required to fence the garden
(remember you will need to find half of the circumference + the diameter to
get the full perimeter?)
diameter = 18 ft
Step1: Calcular la circunferencia del círculo completo
La fórmula para la circunferencia de un círculo es \(C = \pi d\), donde \(d = 15\) ft. Entonces \(C=\pi\times15 = 15\pi\) ft.
Step2: Encontrar la mitad de la circunferencia
La mitad de la circunferencia es \(\frac{C}{2}=\frac{15\pi}{2}\) ft. Usando \(\pi\approx3.14\), \(\frac{15\times3.14}{2}=\frac{47.1}{2}=23.55\) ft.
Step3: Calcular el perímetro total del jardín (mitad de círculo + diámetro)
El perímetro \(P=\frac{15\pi}{2}+15\). Sustituyendo \(\pi\approx3.14\), \(P = 23.55+15=38.55\approx39\) ft.
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39 ft