Question

4(×-2)meter of rope is used to fence the rectangular enclosure shown in the fig. find x.

Answer 1

First find the dimensions of the rectangle.

length x width = area

25 x width = 225

divide each side by 25

width = 225/25 = 9

The garden is 9m by 25m

this makes its perimeter 9 + 25 + 9 + 25 = 68m

4(x-2) = 68

4x -8 = 68

add 8 to each side

4x = 76

divide by 4

x = 19m

checking 4(19-2) = 4(17) = 68

Answer 2

Answer:

X=19

Step-by-step explanation:

Given,

Length=25m

Breadth=b

Area =225

=25×b=225

b=9

Now,

Perimeter=2(25+9)=2×34

=68m

Therefore,

4(x-2)=68

=x-2=68/4

=x-2=17

=X=17+2

= 19