A square plot has an area of 961 $m^{2}$ . The length of the rope (in m) which extends between two poles located on two adjacent corners of the square is 31m.

40m

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Solution

The correct option is A
40m

If the side of a square is $a$ , its area is $a^{2}$ .

According to the question,
Area of the square plot $= a^{2}$ = 961
$a^{2} = 31 \times 31 = 31^{2}$
a = 31 m

Length of the rope required = length of the side of the square plot = 31 m.

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A square plot has an area of 961 m2. The length of the rope (in m) which extends between two poles located on two adjacent corners of the square is 31m.

The correct option is A 40m If the side of a square is a, its area is a2. According to the question, Area of the square plot =a2 = 961 a2=31×31=312 a = 31 m Length of the rope required = length of the side of the square plot = 31 m.

A square plot has an area of 961 $m^{2}$ . The length of the rope (in m) which extends between two poles located on two adjacent corners of the square is 31m.

The correct option is A
40m

If the side of a square is $a$ , its area is $a^{2}$ .

According to the question,
Area of the square plot $= a^{2}$ = 961
$a^{2} = 31 \times 31 = 31^{2}$
a = 31 m

Length of the rope required = length of the side of the square plot = 31 m.