A rectangular field is to be fenced on three sides leaving a side of $20 m$ uncovered. If the area of the field is $680 m^{2}$ , how many metres of fencing will be required.

34

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40

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68

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88

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Solution

The correct option is D $88$
If length of one side is $20 m$ and area is $680 m^{2}$
$\Rightarrow$ Length of other side $= \frac{680}{20} = 34 m$
Now, length of fencing required for the three sides $= 34 + 34 + 20 = 88 m$

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A rectangular field is to be fenced on three sides leaving a side of 20 feet uncovered. If the area of the field is 680 sq. feet, how many feet of fencing will be required?

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A rectangular field is to be fenced on three sides leaving a side of 20 m uncovered. If the area of the field is 680 m2, how many metres of fencing will be required.

The correct option is D 88If length of one side is 20 m and area is 680 m2⇒ Length of other side =68020=34 m Now, length of fencing required for the three sides =34+34+20=88 m

A rectangular field is to be fenced on three sides leaving a side of $20 m$ uncovered. If the area of the field is $680 m^{2}$ , how many metres of fencing will be required.

The correct option is D $88$
If length of one side is $20 m$ and area is $680 m^{2}$
$\Rightarrow$ Length of other side $= \frac{680}{20} = 34 m$
Now, length of fencing required for the three sides $= 34 + 34 + 20 = 88 m$