Answer:
Option B is correct.
5.7 hours
Step-by-step explanation:
Area of a circle(A) is given by:
\(A = \pi r^2\)
where r is the radius of the circle.
As per the statement:
Jesse is sanding a circular wooden table that has a diameter of 6 ft.
⇒diameter(d) =6 ft
We know
diameter = 2 (radius)
⇒\(6 = 2r\)
Divide both sides by 2 we have;
\(r = 3 ft\)
Substitute r =3 ft and \(\pi = 3.14\) in [1] we have;;
\(A = 3.14 \cdot 3^2\)
⇒\(A = 3.14 \cdot 9 = 28.26\) square ft
It is also given that:
She can sand 5 square feet every hour.
⇒5 square feet = 1 hour
then;
28.26 square feet = \(\frac{28.26}{5} = 5.652\) hours.
Therefore, at this rate, approximately 5.7 hours will it take Jesse to finish sanding the table
