A rectangle shed is fenced with 120ft long barbed wire. If length of the shed is twice as long as the width, that is the length?
1 answer:
Answer:
40 ft
Step-by-step explanation:
<em>Data:
</em>
(1) P = 120 ft
(2) l = 2w
<em>Calculations:
</em>
(3) P = 2l + 2w Substitute (1) and (2) into (3)
120 = 2(2w) + 2w Multiply
120 = 4w +2w Combine like terms
120 = 6w Divide by 6
(4) w = 20 ft Substitute (4) into (2)
l = 2 × 20
l = 40 ft
<em>Check:
</em>
120 = 2×40 + 2×20
120 = 80 + 40
120 = 120
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