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 = 15 ft
b) if the fencing company charges $22 per foot for fencing, how much would it cost in total to fence this flower garden?
Step1: Calcular la circunferencia del semicírculo
La fórmula para la circunferencia de un círculo es \(C = \pi d\). Para un semicírculo, la longitud de la arco es \(\frac{1}{2}\pi d\). Dado que \(d = 15\) ft, entonces \(\frac{1}{2}\pi d=\frac{1}{2}\times3.14\times15 = 23.55\) ft.
Step2: Calcular el perímetro total del jardín
El perímetro del jardín semicircular es la longitud del arco más el diámetro. Entonces \(P=23.55 + 15=38.55\approx39\) ft (redondeado al pie más cercano).
Step3: Calcular el costo total
Si el costo es de \( \$22\) por pie, entonces el costo total \(C = 22\times39=\$858\).
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a) \(39\) ft.
b) \(\$858\)