The area of a rectangular dog pen is 8 1/2 square feet.if the width is 3 2/5 feet,what's is the length,in feet ?
2 answers:
Answer:
l = 2 1/2 ft
Step-by-step explanation:
Area is given by the formula
A = l*w
We know the area is 8 1/2
Changing this to an improper fraction 8 1/2 = (2*8 +1)/2 = 17/2
The width is 3 2/5 as an improper fraction = (5*3+2)/5 = 17/5
A = l*w
17/2 = l* 17/5
Multiply each side by 5/17
17/2 * 5/17 = l* 17/5 * 5/17
5/2 = l
2 1/2 = l
Answer:
l = 2.5 feet
Step-by-step explanation:
A = lb
8.5 = l * 3 2/5
8.5 = l * 3.4
l = 8.5 / 3.4
l = 2.5 <u>feet</u> <u>(</u>Always remember to put the units, otherwise you may not get points.)
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