The area of a rectangular wall of a barn is 144 square feet. Its length is 10 feet longer than the width. Find the length and wi dth of the wall of the barn. The width is __feet.
1 answer:
Answer:
8 feet
Step-by-step explanation:
Let l and w be length and width, respectively. Then:
lw=144 and
l=w+10
So:
w(w+10)=144
w²+10w-144=0
(w+18)(w-8)=0
w=8 as the width ................
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Answer:
l×w×h
Step-by-step explanation:
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Step-by-step explanation:
Answer:
Step-by-step explanation:
Let the other leg = x
x^2 + 4^2 = (3x)^2
x^2 + 4^2 = 9x^2
4^2 = 9x^2 - x^2
16= 8x^2
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x^2 = 2
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x = sqrt(2)
other side =4
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x = 1.4
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8 = x / 12.8 102.4 = x Therefore x = 102.4
3 because if the number behind the decimal point is a 5 or above you round up.