Question

the length of a rectangle is twice its breath the perimeter of the rectangle is 120 cm find the length and breadth of this rectangle ​

Answer 1

Answer:

Length=2x

Breadth=X

Perimeter=120

Perimeter=2(l+b)

120=2(2x+X)

120=2(3x)

120=6x

X=120/6

X=20

Length=2x=2×20=40

Breadth=X=20

Area = l×b

Area = 40 × 20

Area = 800

Answer 2

Let the breadth be x

the length be 2x

ATP

2(2x+x) = 120

=) 4x+2x = 120

=) 6x = 120

=) x = 120/6 = 20

Ans:- Length = (2×20) = 40 and Breadth = 20

Verified ✔️✔️

2(40+20) = 120

=) 2×60 = 120

=) 120 = 120

LHS = RHS [Proved]