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1.. a circular track surrounds a lake and has a radius of 3 miles. duri…

Question

1.. a circular track surrounds a lake and has a radius of 3 miles. during a charity event, tanya walks from one side of the lake to the opposite side. how far does she walk?
2.. mr. quinones is covering a rectangular dinner table with clear acrylic. the table measures 7 feet long and 36 inches wide. if the polish acrylic cost $16 per square foot, what is the total cost to cover the table?
3.. a circular jogging loop in a city park has a radius of 5 km. marcos runs around the loop four complete laps during his morning workout. if in average, he burns 5 calories per km. what are the total calories that he burns in the workout?
4.. a warehouse floor measures 150 feet in length and 80 feet in width. the manager wants to get the permit from the fire department, and they charge for the inspection $75 plus $0.02 per square feet. what will be the total payment for the fire department?
5.. erick is designing a circular logo to be printed on a t - shirt. the logo has a diameter of 8 inches and will be printed on a square sheet of paper with an area of 64 square inches. how many square inches of the paper will remain unused?

Explanation:

1.

Step1: Encontrar el diámetro

El diámetro \(d\) de un círculo se calcula como \(d = 2r\), donde \(r\) es el radio. Dado que \(r=3\) millas.
\(d = 2\times3\)

Step2: Calcular el resultado

\(d = 6\) millas

Step1: Convertir la unidad de medida

Convertir 36 pulgadas a pies. Sabiendo que 1 pie = 12 pulgadas, entonces \(36\div12 = 3\) pies.

Step2: Calcular el área del rectángulo

El área \(A\) de un rectángulo se calcula como \(A = l\times w\), donde \(l = 7\) pies y \(w = 3\) pies.
\(A=7\times3\)

Step3: Calcular el costo total

El costo por pie cuadrado es de \(16\) dólares. Entonces el costo total \(C=A\times16\). Sustituyendo \(A = 21\) pies cuadrados.
\(C=21\times16\)

Step1: Calcular la circunferencia del círculo

La circunferencia \(C\) de un círculo se calcula como \(C = 2\pi r\), donde \(r = 5\) km. Tomando \(\pi\approx3.14\).
\(C=2\times3.14\times5\)

Step2: Calcular la distancia total recorrida

Marcos corre 4 vueltas. Entonces la distancia total \(D = 4\times C\). Sustituyendo \(C = 31.4\) km.
\(D=4\times31.4\)

Step3: Calcular las calorías totales quemadas

Borra 5 calorías por km. Entonces las calorías totales \(K=D\times5\). Sustituyendo \(D = 125.6\) km.
\(K=125.6\times5\)

Answer:

6 millas

2.