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const2013 [10]
3 years ago
12

The area of a desk top is 8 ¾ square feet. If the length is 3 ½ft., find the width.2 ft.24 ft.30 ft.

Mathematics
1 answer:
kati45 [8]3 years ago
8 0
Formula for Area of a rectangle :

\boxed {\boxed {\text {Area of a rectangle = Length x Width}}}

\text {Given that the area is }8 \dfrac{3}{4}\ \ ft^2 \text { and the length is } 3 \dfrac{1}{2} \ ft,

8 \dfrac{3}{4} = 3 \dfrac{1}{2} \times \text{ width}

<u>Find width:</u>
\text{ width} = 8 \dfrac{3}{4} \div 3 \dfrac{1}{2}

<u>Change to improper fraction:</u>
\text{ width} = \dfrac{35}{4} \div \dfrac{7}{2}

<u>Change divide fraction to multiplication fraction:</u>
\text{ width} = \dfrac{35}{4} \times \dfrac{2}{7}

<u>Multiply them:</u>
\text{ width} = \dfrac{5}{2}

<u>Simplify to mixed number:</u>
\text{ width} = 2\dfrac{1}{2} \text{ ft}

\boxed {\boxed {\text {Answer : Width =  } 2\dfrac{1}{2} \text {ft. } }}




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