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Kisachek [45]
3 years ago
5

The width of a rectangle is three times its height. If it has an area of 60.75 square feet, what are its dimensions?

Mathematics
2 answers:
horrorfan [7]3 years ago
8 0
The answer is D my dude don’t over think. Since it’s are multiply your answer choices till you reach 60.75
LuckyWell [14K]3 years ago
3 0

Answer

d. 13.5 ft by 4.5 ft

Step-by-step explanation:

Let height of rectangle be x ft

Therefore, width = 3x ft

area \: of \: rectangle = 60.75 \:  {ft}^{2}  \\  \therefore \: lw = 60.75 \\  \therefore \: 3x \times x = 60.75 \\ \therefore \: 3x^{2}  = 60.75 \\  \therefore \: x^{2}  = \frac{60.75}{3}  \\  \therefore \: x^{2}  = 20.25 \\  \therefore \:x =  \sqrt{20.25}  \\  \therefore \:x = 4.5  \: ft\\ \therefore \:3x =3 \times  4.5  = 13.5 \: ft

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