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Solve & Discuss It! Courtney and Malik are buying a rug to fit in a 50-square-foot space. Which rug should they purchase? Explain. $99 Rug Sale! T 7 ft x 7 ft 8 ft diameter 6 ft x 8 1/2 ft Rug Emporium has your floors covered.

Help me please



User Lewis
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1 Answer

5 votes

Answer:

The first rug (7 ft x 7 ft) would be the most appropiate one since it fits in the room, only leaving a total uncovered area of 1 square foot to the sides.

Explanation:

1. Calculate the total area that the different rugs can cover.

a. 7 ft x 7 ft (square):
Area=s^(2) =(7ft)^(2) =49ft^(2).

b. 8 ft diameter (circle):
Area=\pi r^(2) =\pi ((8ft)/(2) )^(2)=50.27ft^(2).

Note. We substituted the radius (r) by the length of the diamateter divided by 2 because the radius is just half of the diamaterer in a circle.

c. 6 ft x 8 1/2 ft (square):
Area=w*l=(6ft)(8.5ft) =51ft^(2).

2. Compare the total area that the different rugs can cover.

Taking into account that the room has an area of 50-square-foot, the 6 ft x 8 1/2 ft is not an option, since the rug is larger than the room. Also, the 8 ft diameter is barely larger than the room, so it isn't an option either. Therefore, the first rug, 7 ft x 7 ft, would be the most appropiate one since it fits in the room, only leaving a total uncovered area of 1 square foot to the sides.

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¿How much space is left uncovered?

If the room has a measure of 50 square-foot, the length of one side is
√(50) . Now, the difference between the height of this room and the rug is, approximately,
0.0711. If the rug is placed in the center of the room, there will be a space of
(0.0711)/(2)= 0.0356 feet between the walls and the rug for each side.

User Takeshi
by
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